Habitat use, but not dispersal limitation, as the mechanism behind the aggregated population structure of the mygalomorph species Atypus affinis

2012 ◽  
Vol 62 (2) ◽  
pp. 181-192 ◽  
Author(s):  
Julien Pétillon ◽  
David Deruytter ◽  
Arthur Decae ◽  
David Renault ◽  
Dries Bonte
Keyword(s):  
Habitat Use ◽  
Calluna Vulgaris ◽  
Dispersal Limitation ◽  
High Dispersal ◽  
Negative Effect ◽  
Dispersal Abilities ◽  
Dispersal Propensity ◽  
Positive Effect ◽  
Very High ◽  
Habitat Variables

Dispersal and habitat selection are the main factors that affect the distribution of species in spatially structured habitat. Species typically occurring in an aggregated way are supposed to experience dispersal limitation or to be highly selective for specific habitat attributes in their environment. In order to understand the distribution pattern of a mygalomorph spider species, Atypus affinis, we conducted an intensive survey to detect correlations of spider densities with specific habitat variables and empirically tested the dispersal propensity of spiderlings. In the field, the spiders exhibited an aggregated distribution correlated with patches of heathlands (dominated by Calluna vulgaris). Contrary to our expectations, laboratory experiments revealed a very high dispersal propensity in juveniles (more than 80% of individuals dispersed at least once during two experiments). This dispersal was strongly context dependent with a pronounced negative effect of starvation and a positive effect of clutch size. Kin competition is hypothezised to be the driving force behind these high dispersal abilities. The aggregation of A. affinis is a likely result of habitat use rather than dispersal limitation.

scholarly journals Impact of forest fertilizers on winter pastures of semi-domesticated reindeer

Rangifer ◽  
1993 ◽  
Vol 13 (5) ◽  
pp. 203 ◽  
Author(s):  
Olof Eriksson ◽  
Tuomo Raunistola
Keyword(s):  
Ammonium Nitrate ◽  
Standing Crop ◽  
Forest Type ◽  
Calluna Vulgaris ◽  
Growing Season ◽  
Experimental Period ◽  
Field Sampling ◽  
Negative Effect ◽  
Cladina Rangiferina ◽  
Positive Effect

The effects of forest fertilizers on Calluna vulgaris, Vaccinium vitis-idaea, Cladina arbusculua, Cladina rangiferina and Cladina stellaris were studied during an eleven-year experimental period in Vasterbotten, Sweden. The study site was situated in the boreal region and was part of a 130 years old Pinus sylvestris stand. The forest type is mainly the dry dwarf-shrub type. Thirty-two demarcated plots (20 m x 20 m) were grouped into eight blocks, each containing four plots. In 1979 and 1985 fertilizations with ammonium nitrate equiavalent to 150 kg N/ha, with ammonium nitrate equiavalent to 250 kg N/ha and with urea equiavalent to 150 kg N/ha were carried out. Field sampling wad done in late July 1979, 1980, 1982, 1984, 1985, 1986, 1988 and 1990. Main parameters studied were coverage, height and standing crop. Effects were visible already after one growing season. All treatments had a positive effect on the growth of C. vulgaris and V. vitis-idaea. Doses around or over 150 kg N/ha, gave a clearly negative effect (range 23% - 73%) on the standing crop of Cladina spp. for a period of time exceeding eleven years compared to the control standing crop.

scholarly journals PENGARUH FLUKTUASI HARGA EMAS, INFLASI, BI RATE DAN UKURAN PERUSAHAAN TERHADAP PEMBIAYAAN PRODUK GADAI EMAS BANK UMUM SYARIAH

2020 ◽  
Vol 6 (1) ◽  
pp. 26-40
Author(s):  
Herman Paleni ◽  
Mia Erfiani
Keyword(s):  
Goodness Of Fit ◽  
Islamic Law ◽  
Gold Price ◽  
Coefficient Of Determination ◽  
Panel Data Regression ◽  
Data Regression ◽  
Negative Effect ◽  
Best Linear Unbiased ◽  
Positive Effect ◽  
Very High

Islamic bank are bank that carry out business activites based on Islamic principles, namely agreements based on Islamic law between bank and   customers in accordance with Islamic law. The function of the bank is as an intermediary between people who are over-funded and those who are short of founds. There are many product channeling founds in Islamic banking one of which is gold mortgage financing. In 2012, golg mortgage financing experienced a very high increase but in 203 as slight decline until finally the decrease in the financing of the lowest gold mortgage that is in 2015. This is what makes the author interested to comply with the reduction of gold mortgage financing. The method of analysis used in this research is the method of panel data regression analysis done with Eviews 8. One of the requirements to perform multiple analysis test needs to be tested classical assumption. It is necessary that the resulting regression equation be BLUE (Best, Linear, Unbiased, Estimator). In addition to assess the goodness of fit a model tested coefficient of determination, F test, and t test. This study uses quarterly data from 20012-2018 for each research variable. The results of this study indicate that the variable gold price fluctuations, the BI Rate has a negative effect on the financing of gold pawning products and the inflation variable has an effect on the financing of the gold price variables and firm size have a positive effect on the financing of gold pawning products.

Working Memory, Mental Prospection, Time Orientation, and Cognitive Insight

2013 ◽  
Vol 34 (3) ◽  
pp. 159-169 ◽  
Author(s):  
Sevtap Cinan ◽  
Aslı Doğan
Keyword(s):  
Working Memory ◽  
Structural Equation ◽  
Factor Model ◽  
Time Orientation ◽  
Equation Modeling ◽  
Cognitive Insight ◽  
Confirmatory Factor ◽  
Negative Effect ◽  
Positive Effect ◽  
Three Factor

This research is new in its attempt to take future time orientation, morningness orientation, and prospective memory as measures of mental prospection, and to examine a three-factor model that assumes working memory, mental prospection, and cognitive insight are independent but related higher-order cognitive constructs by using confirmatory factor analysis (CFA). The three-factor model produced a good fit to the data. An alternative one-factor model was tested and rejected. The results suggest that working memory and cognitive insight are distinguishable, related constructs, and that both are distinct from, but negatively associated with, mental prospection. In addition, structural equation modeling (SEM) showed that working memory had a strong positive effect on cognitive insight and a moderate negative effect on mental prospection.

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

2020 ◽  
Vol 3 (2) ◽  
pp. 93-108
Author(s):  
Annisa Siti Fathonah ◽  
Dadang Hermawan
Keyword(s):  
Secondary Data ◽  
Financial Statements ◽  
Significant Positive Effect ◽  
Return On Assets ◽  
Internal Factors ◽  
Macroeconomic Factors ◽  
Operating Income ◽  
Significant Negative Effect ◽  
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.

Employee Engagement Dan Stress Kerja Pengaruhnya Terhadap Kepuasan Kerja Dan Turnover Intention di Aman Villas Nusa Dua – Bali

2020 ◽  
Vol 2 (1) ◽  
pp. 60-79
Author(s):  
Wayan Arya Paramarta ◽  
Ni Putu Kurnia Darmayanti
Keyword(s):  
Job Satisfaction ◽  
Employee Engagement ◽  
Work Stress ◽  
Turnover Intention ◽  
Secondary Data ◽  
Qualitative And Quantitative ◽  
Library Research ◽  
Analysis Technique ◽  
Negative Effect ◽  
Positive Effect

The aims of this study was to explain the effect of employee engagement and work stress on job satisfaction and turnover intention at Aman Villas Nusa Dua-Bali. The type of data used in this study is qualitative and quantitative data, with data sources namely primary and secondary data. Data collection method is interview, distributing questionnaires to respondents and library research, while the data analysis technique used Smart PLS 3.2.8. The results of this study showed that employee engagement had a positive effect and significant on job satisfaction, work stress had a negative effect but not significant on job satisfaction, employee engagement had a negative effect and significant on turnover intention, work stress had a positive effect and significant on turnover intention, job satisfaction had a negative effect but not significant on turnover intention, employee engagement had a positive effect but not significant on turnover intention trough job satisfaction, work stress had a positive effect but not significant on turnover intention trough job satisfaction at Aman Villas Nusa Dua-Bali.

The Factors Influencing Tourist Visitations Number in Curug Silawe

2019 ◽  
Vol 2 (3) ◽  
pp. 553-561
Author(s):  
Novian Hangga Prakosa ◽  
Fafurida Fafurida
Keyword(s):  
Economic Value ◽  
Consumer Surplus ◽  
Sampling Technique ◽  
Travel Cost ◽  
Analysis Tool ◽  
Literature Study ◽  
Factors Influencing ◽  
Negative Effect ◽  
Value Estimation ◽  
Positive Effect

The purposes of this research are to identify the influence of travel cost, income, distance, access, facilities, natural beautiness, and age on the number of individual visits to Curug Silawe and to estimate the economic value of Curug Silawe through individual travel cost method. The population in this study are tourists that visited Curug Silawe with sample of 98 respondents taken by the quota accidental sampling technique. The data collection method used are literature study and questionnaire. The analysis tool used are OLS linear regression and economic value estimation. The results showed the variables that influence the number of individual visits to Curug Silawe are income, distance and age. Income and age has a positive effect. While distance has a negative effect. The economic value of Curug Silawe reached IDR 1,109,930,140.48 per year. This value is obtained from consumer surplus obtained per individual per year of IDR 308,656.88. Tujuan dari penelitian ini adalah untuk mengidentifikasi pengaruh biaya perjalanan, pendapatan, jarak, akses, fasilitas, keindahan alam, dan usia pada jumlah kunjungan individu ke Curug Silawe dan untuk memperkirakan nilai ekonomi Curug Silawe melalui metode biaya perjalanan individu . Populasi dalam penelitian ini adalah wisatawan yang berkunjung ke Curug Silawe dengan sampel 98 responden yang diambil dengan teknik quota accidental sampling. Metode pengumpulan data yang digunakan adalah studi literatur dan kuesioner. Alat analisis yang digunakan adalah regresi linear OLS dan estimasi nilai ekonomi. Hasil penelitian menunjukkan variabel yang mempengaruhi jumlah kunjungan individu ke Curug Silawe adalah pendapatan, jarak dan usia. Penghasilan dan usia memiliki efek positif. Sedangkan jarak memiliki efek negatif. Nilai ekonomi Curug Silawe mencapai Rp1.109.930.140,48 per tahun. Nilai ini diperoleh dari surplus konsumen yang diperoleh per individu per tahun sebesar Rp308.656,88.

The depressing (negative) effect of oestradiol benzoate on the in vitro secretion of LH and FSH by the pituitary gland of the LRH-pretreated long-term ovariectomized rat changes into the augmentative (positive) effect after discontinuation of the LRH-pretreatment

1985 ◽  
Vol 110 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G. A. Schuiling ◽  
H. Moes ◽  
T. R. Koiter
Keyword(s):  
Depressing Effect ◽  
Ovx Rats ◽  
Gonadotrophin Secretion ◽  
Oestradiol Benzoate ◽  
Negative Effect ◽  
Positive Effect ◽  
Perifusion System

Abstract. The effect of pretreatment in vivo with oestradiol benzoate on in vitro secretion of LH and FSH was studied in long-term ovariectomized (OVX) rats both at the end of a 5-day continuous in vivo pretreatment with LRH and 4-days after cessation of such LRH pretreatment. Rats were on day 0 sc implanted with osmotic minipumps which released LRH at the rate of 250 ng/h. Control rats were implanted with a piece of silicone elastomer with the dimensions of a minipump. On days 2 and 4 the rats were injected with either 3 μg EB or with oil. On day 5 part of the rats were decapitated and the in vitro autonomous (i.e. non-LRH-stimulated) and 'supra-maximally' LRHstimulated release of LH and FSH was studied using a perifusion system. From other rats the minipumps were removed on day 5 and perifusion was performed on day 9. On the 5th day of the in vivo LRH pretreatment the pituitary LH/FSH stores were partially depleted; the pituitaries of the EB-treated rats more so than those of the oil-injected rats. EB alone had no significant effect on the content of the pituitary LH- and FSH stores. On day 9, i.e. 4 days after removal of the minipumps, the pituitary LH and FSH contents had increased in both the oil- and the EB injected rats, but had not yet recovered to control values. In rats not subjected to the 5-days pretreatment with LRH EB had a positive effect on the supra-maximally LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. EB had no effect on the non-stimulated secretion of FSH. After 5 days of in vivo pretreatment with LRH only, the in vitro non-stimulated and supra-maximally LRH-stimulated secretion of both LH and FSH were strongly impaired, the effect correlating well with the LRH-induced depletion of the pituitary LH/FSH stores. In such LRH-pretreated rats EB had on day 5 a negative effect on the (already depressed) LRH-stimulated secretion of LH (not on that of FSH). EB had no effect on the non-stimulated LH/FSH secretion. It could be demonstrated that the negative effect of the combined LRH/EB pretreatment was mainly due to the depressing effect of this treatment on the pituitary LH and FSH stores: the effect of oestradiol on the pituitary LRH-responsiveness (release as related to pituitary gonadotrophin content) remained positive. In LRH-pretreated rats, however, this positive effect of EB was smaller than in rats not pretreated with LRH. Four days after removal of the minipumps there was again a positive effect of EB on the LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. The positive effect of EB on the pituitary LRH-responsiveness was as strong as in rats which had not been exposed to exogenous LRH. The non-stimulated secretion of FSH was again not affected by EB. The results demonstrate that the effect of EB on the oestrogen-sensitive components of gonadotrophin secretion consists of two components: an effect on the pituitary LRH-responsiveness proper, and an effect on the pituitary LH/FSH stores. The magnitude of the effect of EB on the LRH-responsiveness is LRH dependent: it is very weak (almost zero) in LRH-pretreated rats, but strong in rats not exposed to LRH as well as in rats of which the LRH-pretreatment was stopped 4 days previously. Similarly, the effect of EB on the pituitary LH and FSH stores is LRH-dependent: in the absence of LRH, EB has no influence on the contents of these stores, but EB can potentiate the depleting effect of LRH on the LH/FSH-stores. Also this effect disappear after cessation of the LRH-pretreatment.

Pengaruh Etika Bisnis Islam Terhadap Kesejahteraan Pedagang (Studi Kasus Pedagang Pusat Pasar Medan)

2019 ◽  
Vol 4 (1) ◽  
pp. 185
Author(s):  
Ya’ti Ikhwani Nasution
Keyword(s):  
Free Will ◽  
Quantitative Research ◽  
Statistical Tools ◽  
Independent Variables ◽  
Islamic Business Ethics ◽  
Negative Effect ◽  
Data Collection Technique ◽  
Questionnaire Method ◽  
Market Center ◽  
Positive Effect

The purpose of this study is to find out whether there is an influence of Islamic business ethics with the variables of unity, equilibrium, free will, responsibility, benevolence and the welfare of traders in the Pusat Pasar Medan. This research is a quantitative research and the analysis used is multiple regression analysis. The data collection technique used is the questionnaire method obtained directly from the respondent, namely the Pusat Pasar Medan Trader. Analyzed using statistical tools, namely SPSS Version 22. Based on the results of data processing has shown that there is a significant influence as partially and simultaneously among the unity, equilibrium, free will, responsibility and benovelence towards the welfare of traders in the Medan Market Center. For unity, free will, responsibility and benovelence have a positive effect on the welfare of traders in Medan Market Center. While the equilibrium variable has a negative effect on the welfare of Medan Market Center traders. The adjusted R square value is 0.345. This means that 34.5% increase in welfare can be explained by independent variables, namely the variables of unity, equilibrium, free will, responsibility and kindness. While 65.5% is explained by other factors.

Pengaruh Likuiditas, Pertumbuhan Kredit, Efisiensi, dan Kecukupan Modal Terhadap Profitabilitas

2020 ◽  
Vol 1 (1) ◽  
pp. 27-35
Author(s):  
Lia Hendrawati ◽  
Said Djamaludin
Keyword(s):  
Stock Exchange ◽  
Growth Efficiency ◽  
Research Data ◽  
Capital Adequacy ◽  
Annual Data ◽  
Significant Positive Effect ◽  
Credit Growth ◽  
Negative Effect ◽  
Positive Effect ◽  
Observation Period

This study to examine and analyze the effect of liquidity, credit growth, efficiency, and capital adequacy on the Bank’s profitability listed on the IDX partially and simultaneously. The research data are annual data for the 5-year observation period (2009-2013). This research was conducted at 33 banks listed on Indonesia Stock Exchange. Banks Analyzed that met the population criteria were 23 banks. The analytical method used in multiple linier regression. The results showed that liquidity, credit growth, efficiency, and capital adequacy together (simultaneously) significantly influence profitability. Partially,  liquidity has a significant positive effect on profitability, while efficiency has a significant negative effect. Credit growth and capital adequacy have no significant effect on profitability. Liquidity is the variable that has the biggest effect on the Bank’s profitability. 

FAKTOR FAKTOR YANG MEMPENGARUHI PENGUNGKAPAN AKUNTANSI SUMBER DAYA MANUSIA PADA PERBANKAN

Wahana ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 61-72
Author(s):  
Rani Eka Diansari ◽  
Sheftyka Rispin
Keyword(s):  
Human Resource ◽  
Stock Exchange ◽  
Sampling Technique ◽  
Significant Positive Effect ◽  
Accounting Disclosure ◽  
Analytical Technique ◽  
Human Resource Accounting ◽  
Negative Effect ◽  
Resource Accounting ◽  
Positive Effect

This study aims to determine the effect of firm size on human resource accounting disclosure, the effect of profitability on human resource accounting disclosure and the effect of company age on human resources accounting disclosure. The population of this study are banking companies listed on the Indonesia Stock Exchange in 2015-2017 with a sample of 120 samples. The sampling technique uses purposive sampling method. The data used is secondery data. Analytical technique used are descriptive statistical analysis, classical assumption test, multiple linear regression, F test, t test and R2 test. The result of the study concluded that 1.) the value of the company sixe was 2,870 and a significance value of 0,005. This proves that the size of company has a significant positive effect on human resource accounting disclosure, 2.) the profitability value is -0,585 and the significance value is 0,560. This proves that profitability has a negative effect not significant on human resource accounting disclosure and 3.) the value of the company age is 1,616 and the significance value is 0,109. This proves that the age company has no significant positive effect on human resource accounting disclosure.  Keywords: company size, profitability, company age, human resource accounting disclosure

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