Field Evidence of Mosquito Population Regulation by a Gregarine Parasite

Field Evidence ◽

Negative Effect ◽

Host Regulation

Abstract Although parasites are by definition costly to their host, demonstrating that a parasite is regulating its host abundance in the field can be difficult. Here we present an example of a gregarine parasite, Ascogregarina taiwanensis Lien and Levine (Apicomplexa: Lecudinidae), regulating its mosquito host, Aedes albopictus Skuse (Diptera: Culicidae), in Bermuda. We sampled larvae from container habitats over 2 yr, assessed parasite prevalence, and estimated host abundance from egg counts obtained in neighboring ovitraps. We regressed change in average egg count from 1 yr to the next on parasite prevalence and found a significant negative effect of parasite prevalence. We found no evidence of host density affecting parasite prevalence. Our results demonstrate that even for a parasite with moderate virulence, host regulation can occur in the field.

Estimasi Pengaruh Faktor Internal Bank dan Stabilitas Makroekonomi terhadap Profitabilitas dengan Mediasi Rasio Pembiayaan Bermasalah di PT Bank Muamalat Indonesia

Jurnal MAPS (Manajemen dan Perbankan Syariah) ◽

10.32483/maps.v3i2.37 ◽

2020 ◽

Vol 3 (2) ◽

pp. 93-108

Author(s):

Annisa Siti Fathonah ◽

Dadang Hermawan

Keyword(s):

Secondary Data ◽

Financial Statements ◽

Return On Assets ◽

Internal Factors ◽

Macroeconomic Factors ◽

Operating Income ◽

Negative Effect ◽

Positive Effect

This study aims to determine and analyze how much influence the bank's internal factors such as Equity, Operational Costs per Operating Income (BOPO), Financing Deposit to Ratio (FDR), Non Performing Financing (NPF) as a mediator and external or macroeconomic factors namely inflation and Gross Domestic Product (GDP) on profitability represented by Return on Assets (ROA) at Bank Muamalat Indonesia for the period 2008-2018. The data used in this research are secondary data obtained from the publication of quarterly financial statements from 2008 to quarter 2 of 2018. The method that used in this research is path analysis with SPSS 20.0 as the analytical tool. The results of the study partially test the hypothesis (t-test), in substructure I shows that the capital variable has a significant negative effect on NPF, BOPO and inflation has a significant positive effect on NPF, FDR and GDP do not significantly influence NPF at Bank Muamalat Indonesia. In substructure II partially, Capital, BOPO, significant negative effect on ROA, FDR and NPF has a significant positive effect on ROA, Inflation and GDP does not significantly influence ROA while simultaneously significantly influencing ROA. Based on the sobel test, capital has a significant effect on ROA through NPF, BOPO has a significant effect on ROA through NPF, FDR has a significant effect on ROA through NPF, Inflation has a significant effect on ROA through NPF, while GDP has no significant effect on ROA through NPF.

Plant diversity and species richness of Ljubljana marsh grasslands under the influence of different cutting and fertilizing regimes

Acta Agronomica Hungarica ◽

10.1556/aagr.57.2009.2.11 ◽

2009 ◽

Vol 57 (2) ◽

pp. 197-203 ◽

Cited By ~ 2

Author(s):

T. Sinkovč

Keyword(s):

Species Richness ◽

Plant Diversity ◽

Grassland Management ◽

Botanical Composition ◽

Negative Effect ◽

Cutting Regimes ◽

N Rates ◽

Exploitation Intensity ◽

Plot Design

The botanical composition of grasslands determines the agronomic and natural values of swards. Good grassland management usually improves herbage value, but on the other hand it frequently decreases the plant diversity and species richness in the swards. In 1999 a field trial in a split-plot design with four replicates was therefore established on the Arrhenatherion type of vegetation in Ljubljana marsh meadows in order to investigate this relationship. Cutting regimes (2 cuts — with normal and delayed first cut, 3 cuts and 4 cuts per year) were allocated to the main plots and fertiliser treatments (zero fertiliser — control, PK and NPK with 2 or 3 N rates) were allocated to the sub-plots. The results at the 1 st cutting in the 5 th trial year were as follows: Fertilising either with PK or NPK had no significant negative effect on plant diversity in any of the cutting regimes. In most treatments the plant number even increased slightly compared to the control. On average, 20 species were listed on both unfertilised and fertilised swards. At this low to moderate level of exploitation intensity, the increased number of cuts had no significant negative effect on plant diversity either (19 species at 2 cuts vs. 20 species at 3 or 4 cuts). PK fertilisation increased the proportion of legumes in the herbage in the case of 2 or 3 cuts. The proportion of grasses in the herbage increased in all the fertilisation treatments with an increased numbers of cuts. Fertiliser treatment considerably reduced the proportion of marsh horsetail ( Equisetum palustre ) in the herbage of the meadows. This effect was even more pronounced at higher cut numbers. The proportion of Equisetum palustre in the herbage was the highest in the unfertilised sward with 2 cuts (26.4 %) and the lowest in the NPK-fertilised sward with 4 cuts (1.4%).

Impact of the Limestone Powder on the Properties of Cement Paste and Mortar

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.174-177.236 ◽

2012 ◽

Vol 174-177 ◽

pp. 236-240

Author(s):

Jing Zhang ◽

Zhu Li

Keyword(s):

Mechanical Properties ◽

Cement Paste ◽

Experimental Studies ◽

Water Requirement ◽

Limestone Powder ◽

Inert Material ◽

Normal Concrete ◽

Negative Effect

Experimental studies on the properties of cement paste and mortar with the use of limestone powder were carried out. The results show that the replacement with 10% to 30% limestone powder in cement paste can reduce the water requirement for certain flowability. As an inert material, the use of the limestone powder has significant negative effect on the mechanical properties of mortar. However, strength requirement of normal concrete (mortar) can be reached by reducing the water to cementious material ratio, which makes the use of limestone powder as a replacement of cement possible.

Dividend Policy as a Driver of Corporate Growth in Sub-Saharan Africa: Evidence in Nigeria

Indian-Pacific Journal of Accounting and Finance ◽

10.52962/ipjaf.2020.4.2.100 ◽

2020 ◽

Vol 4 (2) ◽

pp. 4-13

Author(s):

Emmanuel Otitolaiye ◽

Tunji Siyanbola

Keyword(s):

Dividend Policy ◽

Sub Saharan Africa ◽

Insurance Companies ◽

Firm Age ◽

Dividend Payout ◽

Ex Post ◽

Corporate Growth ◽

Negative Effect ◽

Sub Saharan

Dividend policy remains an important topic in modern corporate finance. Researchers, managers, and business owners seek to understand the optimal dividend policy. This study examined dividend policy as a driver of corporate growth in sub-Saharan Africa: evidence in Nigeria. The ex-post facto research design was adopted to analyse how dividend policy spur the growth of active insurance companies in the Nigerian Stock Exchange using secondary data of the sampled firms for 2007 – 2018 while utilising descriptive and inferential (regression) statistics in data analysis. The findings reveal that dividend policy in terms of dividend payout has an insignificant negative effect on corporate growth of insurance companies in Nigeria (?= -8.09E-05, p=0.77; Adjusted R2=0.4093; F(4,139)=3.29; p=0.00 with the controlling effect of efficiency, firm age and leverage which have a significant effect on corporate growth of insurance companies in Nigeria. Specifically, the study reveals that efficiency has a significant negative effect on corporate growth (?=-5.29, p<0.05); while firm age discloses a significant positive influence on corporate growth (?=0.417, p<0.05); as leverage exerts a significant negative effect on corporate growth (?=0.052, p<0.05). Therefore, the study concludes that dividend policy does not significantly drive insurance companies' dividend payout growth. The study recommends that insurance companies' management retain more of their profits, improve their efficiency, and control their leverage to further growth.

PENGARUH SPREAD, MARKET VALUE, VARIANCE RETURN DAN DIVIDEND PAYOUT RATIO TERHADAP HOLDING PERIOD SAHAM

Matrik Jurnal Manajemen Strategi Bisnis dan Kewirausahaan ◽

10.24843/matrik:jmbk.2016.v10.i02.p07 ◽

2016 ◽

pp. 168

Author(s):

Ni Luh Ayu Yulita Utami ◽

Ida Bagus Panji Sedana

Keyword(s):

Stock Exchange ◽

Participant Observation ◽

Secondary Data ◽

Market Value ◽

Negative Influence ◽

Dividend Payout ◽

Holding Period ◽

Return Variance ◽

Negative Effect

The purpose of this study was to determine the effect spreads, market value, variance return and dividend payout ratio of the holding period of the stock chemical and basic industry sectors 2011-2014 period. The study was conducted using the method of non-participant observation, the data used is secondary data obtained in the Indonesia Stock Exchange (IDX) through the site www.idx.co.id. The sample used in the study of eight companies which were determined using purposive sampling method. The analysis technique used in this research is multiple linear regression. Based on the analysis, variable spreads had a negative influence is not significant, the market value has a significant negative effect, return variance has no significant negative effect and the dividend payout ratio has a significant positive pengeruh. Simultaneously independent variables significantly influence the holding period. Based on the results of this study should investors pay attention to the variable market value and the dividend payout ratio that has a significant influence on the holding period

Dampak Bank Specific Variables Pada Rasio Non Performing Loan Dalam Sistem Perbankan Indonesia

Jurnal Manajemen Teori dan Terapan | Journal of Theory and Applied Management ◽

10.20473/jmtt.v8i3.2732 ◽

2016 ◽

Vol 8 (3) ◽

Author(s):

Anita Carolina ◽

Muhammad Madyan

Keyword(s):

Linear Regression ◽

Multiple Linear Regression ◽

Credit Rating ◽

Multiple Linear Regression Model ◽

Sampling Technique ◽

Total Sample ◽

Partial Regression Coefficient ◽

Significance Level ◽

Negative Effect

Conventional banks are vulnerable to non-performing loans, because the credit is the main source income of a bank. Credit risk may still occur, even though the bank's management has made efforts based credit rating 5C. The purpose of this study was to determine how much influence the variable CAR, LAR, NIM, and ROE against Non-Performing Loans (NPL) in the banking companies listed on BEI. The sampling technique used is purposive sampling with criteria: (1) a conventional commercial bank listed on the BEI 2009-2013 period, (2) the bank that issued the annual financial statements in a row in the period from 2009 to 2013, and (3) bank which has a data completeness NPL, CAR, LAR, NIM, and ROE in the period 2009-2013. Data obtained from the annual report of each bank in 2009-2013. There are a total sample of 29 banks. The analysis technique used is multiple linear regression and hypothesis testing using t-statistic to test the partial regression coefficient and F-statistic to test the effect simultaneously with a significance level of 0.05. Before being tested by multiple linear regression, first performed classical assumption of normality test data. The results showed that there were no deviations from the classical assumption test. This indicates that the available data is normal or eligible to be used as a multiple linear regression model. From the analysis, CAR and ROE have significant negative effect on the NPL and LAR have not significant negative effect on the NPL, while variable NIM have significant positive effect on the NPL.

Profitabilitas menjadi pemediasi untuk variabel yang mempengaruhi struktur modal (Studi pada Bank Umum Syariah di Indonesia periode 2016-2020)

JURNAL EKONOMI DAN BISNIS ISLAM ◽

10.32505/j-ebis.v6i2.3266 ◽

2021 ◽

pp. 160-187

Author(s):

Indah Lestari

Keyword(s):

Capital Structure ◽

Commercial Banks ◽

Sampling Technique ◽

Tax Shield ◽

Growth Opportunity ◽

Negative Effect ◽

Debt Tax Shield ◽

Positive Effect

The purpose of this study is to find out and analyze whether there is an Influence of Liquidity, Growth Opportunity, Asset Structure, and Non Debt Tax Shield on Capital Structure with Profitability as an Intervening Variable in Islamic Commercial Banks Registered at OJK 2016-2020 ". This research is a quantitative research using data sources derived from secondary data, namely the annual report. The sampling technique used in this research is purposive sampling technique. Of the 14 Islamic commercial banks registered with the OJK, only 11 are in accordance with the sample criteria in this study. This study uses the Eviews 9 application as a tool for data processing. The analytical methods used in this research are stationarity test, panel data regression model test, classical assumption test, regression test, and path analysis test. The results obtained in this study are liquidity has a significant negative effect on capital structure. Growth opportunity and asset structure have a significant positive effect on capital structure. Meanwhile, the non-debt tax shield and profitability variables have no significant positive effect on capital structure. Liquidity has no significant negative effect on profitability, growth opportunity has no significant positive effect on profitability. Asset structure has a significant positive effect on profitability, while non-debt tax shield has a significant negative effect on capital structure. From the results of the path analysis conducted in this study, profitability was not able to mediate the variables of liquidity, growth opportunity, and non-debt tax shield on capital structure, but for the asset structure variable profitability was able to mediate the influence of asset structure on capital structure.

PENGARUH MASA KERJA, PELATIHAN, DAN NILAI KETETAPAN PAJAK TERHADAP KUALITAS KEPUTUSAN KEBERATAN

Jurnal Pajak dan Keuangan Negara (PKN) ◽

10.31092/jpkn.v1i2.790 ◽

2020 ◽

Vol 1 (2) ◽

pp. 73-80

Author(s):

Amardianto Arham ◽

Budhi Mulia Cipta ◽

Ragil Novitasari

Keyword(s):

Quantitative Method ◽

Purposive Sampling ◽

Tax Assessment ◽

Negative Effect ◽

Positive Effect

The purpose of this study is to analyze the effect of tenure, training, and the value of tax assessments on the quality of objection decisions. This study uses a quantitative method with purposive sampling. The results of this study indicate that the tenure does not affect the quality of the objection decision, training has a significant positive effect on the quality of the objection decisions, and the value of the tax assessment has a significant negative effect on the quality of the objection decision. Tujuan dari penelitian ini adalah untuk menganalisis pengaruh masa kerja, pelatihan, dan nilai ketetapan pajak terhadap kualitas keputusan keberatan. Penelitian ini menggunakan metode kuantitatif dengan purposive sampling. Hasil penelitian ini menunjukkan bahwa masa kerja tidak berpengaruh terhadap kualitas keputusan keberatan, pelatihan berpengaruh positif signifikan terhadap kualitas keputusan keberatan, dan nilai ketetapan pajak berpengaruh negatif signifikan terhadap kualitas keputusan keberatan.

FAKTOR-FAKTOR YANG MEMPENGARUHI PENGGUNAAN INFORMASI AKUNTANSI DI UKM WIG KABUPATEN PURBALINGGA

Jurnal Akuntansi Auditing dan Keuangan BALANCE ◽

10.25170/balance.v16i2.1621 ◽

2020 ◽

Vol 16 (2) ◽

pp. 143-170

Author(s):

Aditya Rahmawan ◽

Eliada Herwiyanti ◽

Siti Maghfiroh

Keyword(s):

Data Analysis ◽

Sampling Method ◽

Accounting Information ◽

Educational Background ◽

Purposive Sampling ◽

Negative Effect ◽

Positive Effect ◽

Education Business

This study aimed to examine the factors that influence the use of accounting information in SMEs. The object of research is Wig UKM in Purbalingga Regency. From this research, it can be seen how education, business scale, business age, and accounting knowledge of the use of UKM Wig accounting information in Purbalingga. The number of respondents involved in this study was 82 people. Sampling using a purposive sampling method. Based on the results of research and data analysis using SPSS it was found that: (1) educational background did not have a significant negative effect on the use of accounting information, (2) the business scale had no significant positive effect on the use of accounting information, (3) the age of the business had no significant negative effect on the use of accounting information, and (4) accounting knowledge has a significant positive effect on the use of accounting information.

The Impact Of Dividend Policy, Managerial Ownership, Institutional Ownership To Capital Structure On Manufacturing Company In Indonesia Stock Exchange (Idx) Period 2012-2016

Journal of Business and Behavioural Entrepreneurship ◽

10.21009/jobbe.002.1.04 ◽

2018 ◽

Vol 2 (1) ◽

pp. 28-39

Author(s):

Ratna Putri Indah Puspita ◽

Suherman Suherman

Keyword(s):

Capital Structure ◽

Dividend Policy ◽

Random Effect Model ◽

Institutional Ownership ◽

Managerial Ownership ◽

Manufacturing Companies ◽

Negative Effect ◽

The Impact ◽

The Capital Structure

This study aims to determine the effect of dividend policy, managerial ownership and institutional ownership on the capital structure of manufacturing companies listed on the IDX for the 2012-2016 period. The data used in this study is an annual report of the Manufacturing Sector listed on the IDX for the period 2012-2016. By using purposive sampling method, 56 companies were obtained and consisted of 280 observations. The model used in this research is panel data analysis using the Random Effect Model approach. The results of this study indicate that the dividend policy has a positive but not significant effect on DER, but has a significant positive effect on DAR. While managerial ownership is influential but not significantly negative on the capital structure (DER and DAR). Institutional ownership has a significant negative effect on DER, but has a negative but not significant effect on DAR. Profitability has a significant negative effect on the capital structure (DER and DAR), while the structure of assets and company size does not have a significant effect on the capital structure. (DER and DAR).