5,5′-Di-4-pyridyl-2,2′-(p-phenyl­ene)di-1,3,4-oxadiazole

In the crystal structure of the title compound, C20H12N6O2, the mol­ecules are located on centres of inversion. The complete mol­ecule is almost planar, with a maximum deviation from the mean plane of 0.0657 (1) Å for the O atom. In the crystal, mol­ecules are stacked into columns elongated in the a axis direction. The centroid–centroid distances between the aromatic rings of the mol­ecules within the columns are 3.6406 (1) and 3.6287 (2) Å. Mol­ecules are additionally connected via weak inter­molecular C—H⋯N hydrogen bonding

A method dealing with a large number of correlated traits in a linkage genome scan

We propose a method to perform linkage genome scans for many correlated traits in the Genetic Analysis Workshop 15 (GAW15) data. The proposed method has two steps: first, we use a clustering method to find the tight clusters of the traits and use the first principal component (PC) of the traits in each cluster to represent the cluster; second, we perform a linkage scan for each cluster by using the representative trait of the cluster. The results of applying the method to the GAW15 Problem 1 data indicate that most of the traits in the same cluster have the same regulators, and the representative trait measure, the first PC, can explain a large part of the total variation of all the traits in each cluster. Furthermore, considering one cluster of traits at a time may yield more linkage signals than considering traits individually

(μ-5-Carb­oxy-1H-imidazole-4-carboxyl­ato-κ4 N 1,O 5:N 3,O 4)bis­[amminesilver(I)]

In the title compound, [Ag2(C5H2N2O4)(NH3)2], each of the two AgI atoms is coordinated by two N atoms from an ammonia mol­ecule and a 5-carb­oxy-1H-imidazole-4-carboxyl­ate ligand in an almost linear geometry, and by one carboxyl­ate O atom with a weak inter­action. The Ag atoms are assembled into a linear tetra­mer through Ag⋯Ag inter­actions. Each Ag tetra­mer is linked by four 5-carb­oxy-1H-imidazole-4-carboxyl­ate ligands, forming a puckered chain. The complex involves a strong intra­molecular O—H⋯O hydrogen bond

4-Hydr­oxy-6-[(4-hydr­oxy-1-oxo-1,2-dihydro­phthalazin-6-yl)carbon­yl]phthalazin-1(2H)-one

In the crystal structure of the title compound, C17H10N4O5, the mol­ecules lie on twofold axes (through the ketone bridge C and O atoms). The dihedral angle between the two phthalazine rings is 52.25 (1)°. In the crystal, inter­molecular N—H⋯O and O—H⋯O inter­actions link the mol­ecules

Looking into the Environmental Factors Affecting the Performance of Ubiquitous Technologies Deployment: An Empirical Study on Chinese Information and Communication Technology Companies

Effective deployment of ubiquitous technologies can help companies improve the business efficiency, especially for those ICT (Information communication technology) companies who are involved in M-business, M-commerce, and etc. However, there are many factors could affect the performance of the ubiquitous technologies deployment, such as the company’s management, the employee’s coordination, and etc. In this paper, we are focused on the environmental factors that would have an impact on the performance of organizations which have deployed or is deploying ubiquitous technologies, and investigate more than 50 Chinese ICT companies. According to our findings, in the context of China, a sensible, dependent, and interactive business relationship with the outside environment will have a positive impact on their ubiquitous technologies deployment’s performance, while the decentralization and hierarchism within organizational structure in the inside environment will have a negative impact on their ubiquitous technologies deployment’s performance