N-{(E)-[4-(Dimethyl­amino)­phen­yl]methyl­idene}-2,3-dimethyl­aniline

There are two independent mol­ecules in the asymmetric unit of the title compound, C17H20N2, in which the dihedral angles between the aromatic rings are 30.34 (11) and 41.44 (8)°. In the crystal, weak C—H⋯π inter­actions may help to establish the packing

The Kumaraswamy Marshal-Olkin Family of Distributions

We introduce a new family of continuous distributions called the Kumaraswamy Marshal-Olkin generalized family of distributions. We study some mathematical properties of this family. Its density function is symmetrical, left-skewed, right-skewed and reversed-J shaped, and has constant, increasing, decreasing, upside-down bathtub, bathtub and S-shaped hazard rate. We present some special models and investigate the asymptotics and shapes of the family. We derive a power series for the quantile function and obtain explicit expressions for the moments, generating function, mean deviations, two types of entropies and order statistics. Some useful characterizations of the family are also proposed. The method of maximum likelihood is used to estimate the model parameters. We illustrate the importance of the family by means of two applications to real data sets

A New Weibull-G Family of Distributions

Statistical analysis of lifetime data is an important topic in reliability engineering, biomedical and social sciences and others. We introduce a new generator based on the Weibull random variable called the new Weibull-G family. We study some of its mathematical properties. Its density function can be symmetrical, left-skewed, right-skewed, bathtub and reversed-J shaped, and has increasing, decreasing, bathtub, upside-down bathtub, J, reversed-J and S shaped hazard rates. Some special models are presented. We obtain explicit expressions for the ordinary and incomplete moments, quantile and generating functions, Renyi entropy, order statistics and reliability. Three useful characterizations based on truncated moments are also proposed for the new family. The method of maximum likelihood is used to estimate the model parameters. We illustrate the importance of the family by means of two applications to real data sets

5-[(E)-(2-Fluoro­benzyl­idene)amino]-2-hy­droxy­benzoic acid

In the title compound, C14H10FNO3, the dihedral angle between the two benzene rings is 32.66 (14)°. An S(6) ring motif is formed due to an intra­molecular O—H⋯O hydrogen bond between the hy­droxy and carbonyl groups. In the crystal, mol­ecules are consolidated into dimers with R 2 2(8) ring motifs by pairs of O—H⋯O hydrogen bonds

The extent of factors influencing automobile salesperson’s career tenure in Malaysia

Salesperson’s tenure is a major issue for companies especially in today’s era of high competition. A high rate of employee turnover is reported to impact organizational productivity and competitiveness. The present study aims to identify and test those factors which play an important role in salesperson’s career tenure. For this purpose, data was collected from 400 sales personnel, working in various automobile companies, through self-administered questionnaire. The data analysis was conducted using SPSS and AMOS software. Factor analysis was performed to extract and decide on the number of factors underlying the measured variables of interest. Structural equation modelling (SEM) was then used to examine the variables and the fitness of proposed model. We found a significant positive impact of intrinsic motivation on job satisfaction and organizational commitment. Similarly, we also found the impact of organizational commitment on employee productivity and tenure. The findings of this study have a major implication for marketing organizations and more specifically for recruitment agencies

Methyl 4-{[(4-methyl­phen­yl)sulfon­yl]amino}­benzoate

In the mol­ecule of the title compound, C15H15NO4S, the dihedral angle between the two rings is 88.05 (7)°. The methyl ester group is nearly coplanar with the adjacent ring [dihedral angle = 2.81 (10)°], whereas it is oriented at 86.90 (9)° with respect to the plane of the ring attached to the –SO2– group. Weak intra­molecular C—H⋯O hydrogen bonding completes S(5) and S(6) ring motifs. The mol­ecules form one-dimensional polymeric C(8) chains along the [010] direction due to N—H⋯O hydrogen bonding and these chains are linked by C—H⋯O hydrogen bonds, forming a three-dimensional network

2-(tert-Butoxy­carbonyl­amino)-2-(2-fluoro­phen­yl)acetic acid

The title compound, C13H16FNO4, consists of conventional, centrosymmetric carboxyl­ate dimers. These dimers form infinite polymeric chains due to inter­molecular N—H⋯O hydrogen bonding. The 2-fluoro­phenyl unit is disordered over two sets of sites with an ocupancy ratio of 0.915 (3):0.085 (3)

4-Methyl-N-{4-[(5-methyl-1,2-oxazol-3-yl)sulfamo­yl]phen­yl}benzene­sulfonamide

In the title compound, C17H17N3O5S2, the dihedral angle between the two benzene rings is 81.27 (8)° and the heterocyclic ring is oriented at 9.1 (2) and 76.01 (9)° with respect to these rings. Mol­ecules are connected via N—H⋯N and N—H⋯O hydrogen bonds, generating an R 2 2(8) motif, into chains running along the [001] direction. There is also an intra­molecular C—H⋯O hydrogen bond completing an S(6) ring motif. The polymeric chains are inter­linked through inter­molecular C—H⋯O hydrogen bonds

1-(2-Oxoindolin-3-yl­idene)-4-[2-(tri­fluoro­meth­yl)phen­yl]thio­semicarbazide

In the title compound, C16H11F3N4OS, the dihedral angle between the aromatic ring systems is 69.15 (10)°. Intra­molecular N—H⋯N and N—H⋯O hydrogen bonds generate S(5) and S(6) rings, respectively. A short N—H⋯F contact also occurs. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds generate R 2 2(8) loops. The dimers are linked by N—H⋯F hydrogen bonds, forming polymeric chains propagating in [100]. π–π inter­actions also exist between the centroids of the benzene rings of the 2-oxoindoline group at a distance of 3.543 (3) Å and a short C=O⋯π contact occurs. Two F atoms of the trifluoro­methyl group are disordered over two sets of sites in a 0.517 (8):0.483 (8) ratio