Search

Based on cognitive consistency theory, this study developed a motivation mechanism linking on-the-job embeddedness to employees’ job behaviors. This mechanism was tested using a sample of 170 subordinate-supervisor dyads. HLM analysis results revealed that organization-based self-esteem fully mediated the influence of on-the-job embeddedness on job performance and organizational citizenship behavior-altruism and partially mediated on-the-job embeddedness’s influence on innovative behavior. However, organization-based self-esteem did not mediate the relationship between on-the-job embeddedness and organizational citizenship behavior-voice. Implications are discussed.

The reaction of methyl anthranilates with N-arylcyanamides in the presence of p-TsOH in t-BuOH under reflux afforded predominantly 3-arylquinazolin-4-ones. In contrast, the reaction of the same reactants with TMSCl in t-BuOH at 60 °C followed by the Dimroth rearrangement in aqueous ethanolic sodium hydroxide gave exclusively the regioisomers, 2-(N-arylamino)quinazolin-4-ones. The regioselective synthesis of N-aryl-substituted 2-aminoquinazolin-4-ones can be further applied to the synthesis of benzimidazo[2,1-b]quinazolin-12-ones.

A facile and general synthesis of various N-substituted cyanamides was accomplished by the Tiemann rearrangement of amidoximes with benzenesulfonyl chlorides (TsCl or o-NsCl) and DIPEA.

CuI-Catalyzed intramolecular aminocyanation of terminal alkynes in N-(2-ethynylphenyl)-N-sulfonylcyanamides was initiated by the formation of Cu–acetylide to trigger N–CN bond cleavage of the N-sulfonylcyanamide moiety followed by CN migration to form a β-cyano Cu–vinylidene intermediate. Subsequently, the indole ring closure furnished the corresponding 1-sulfonyl-3-cyanoindoles.

This study uses cognitive consistency theory to develop a model linking proactive personality to employees' work outcomes. This model was tested using a sample of 161 subordinate–supervisor dyads. HLM analysis results revealed that organisation-based self-esteem fully mediated the relationships betw

Objective This study was to investigate the usefulness and limitations of cardiac magnetic resonance imaging (MRI). We compared echocardiography (ECHO) and perfusion scans to evaluate: left ventricular wall scar formation of the myocardium; hypokinesis, akinesis, or dyskinesis of the myocardium; regurgitation of the aortic and mitral valves; post acute myocardial infarction (AMI) ventricular function; and the viable myocardium (ischemia/infarction). Methods Twenty patients received both cardiac MRI and ECHO. Among them, nine patients received perfusion scans. The modalities and methods examined in this study were not the most advanced or updated protocols. Results We compared the results of cardiac MRI with those of ECHO and perfusion scans. We found significant correlations between the interpretations of left ventricular wall morphological change with dynamic images for hypokinesia, akinesia, and dyskinesia of the myocardium. We also found possible correlations between cardiac MRI and perfusion scans regarding their results to produce a “bull's eye target figure” to evaluate severe ischemia and infarctions. Conclusion We found that cardiac MRI provided a useful adjunct to ECHO on interpretations of left ventricular wall morphological change. The correlations between qualitative interpretations of cardiac MRI versus perfusion scan respective to ‘bull's eye target figures’, were found to be moderately matching. There was an unsatisfactory mismatching of correlations between quantitative by manual input and the drawing inaccuracy and an unavoidable error of the post-processing technique of cardiac MRI on ejection fraction (EF) and end systolic volume (ESV).

This study uses social exchange theory to develop a model of the processes linking work–family conflict to job attitudes. This model was tested on a sample of 236 employees in Taiwan's high-technology industry. The regression results revealed that perceived organizational support and leader–member exchange fully mediated the influence of work–family conflict on intentions to quit and affective organizational commitment, and partially mediated work–family conflict's influence on job satisfaction. The implications are discussed in this article.

A 19-year-old boy with shortness of breath and chest pain after strenuous exercise presented to emergency department . On physical examination, the neck and shoulders appeared to be swollen. There was crepitus on skin palpation. Chest X-ray disclosed diffuse subcutaneous emphysema and pneumomediastinum. CT showed additional finding of air in epidural space. The patient was discharged after 2 days of hospitalisation with conservative treatment uneventfully. Pneumorrhachis is usually caused by abrupt increase in intrathoracic pressure in instance of forceful vomiting, cough or asthma attack in an otherwise healthy young adult. It is usually accompanied with pneumomediastinum. The management of epidural pneumatosis should be tailored according to its primary cause. For most patients with pneumorrhachis associated to a spontaneous pneumomediastinum without neurological symptoms, this condition is generally self-limited. For epidural free air of large volume that causes neurological deficits, surgical laminectomy may be indicated.

A facile and general synthesis of various N-substituted cyanamides was accomplished by the Tiemann rearrangement of amidoximes with benzenesulfonyl chlorides (TsCl or o-NsCl) and DIPEA.

A 48-year-old man presented with headache and extreme hypertension. Computed tomography showed diffuse brain stem hypodensity. Magnetic resonance imaging revealed diffuse brain stem vasogenic edema. Hypertensive brain stem encephalopathy is an uncommon manifestation of hypertensive encephalopathy, which classically occurs at parietooccipital white matter. Because of its atypical location, the diagnosis can be challenging. Moreover, the coexistence of hypertension and brain stem edema could also direct clinicians toward a diagnosis of ischemic infarction, leading to a completely contradictory treatment goal.

This paper presents an approach to work sampling involving a mixture of fixed and random sampling. Fixed-interval sampling is more efficient in terms of providing more precise information for the same number of observations. Random sampling avoids the possibilities of sampling times being anticipated and the sampling schedule coinciding with some rhythm in the sampled process. Using a mixture of fixed and random sampling provides a smooth transition from fixed to random sampling and allows the practitioner to select a mixture level appropriate for his or her purposes. The efficiency of the mixture sampling method is analyzed by using an alternating Poisson process model for the sampled process. The mixture sampling method eliminates the observation-free period after every observation that was provided by the previously proposed delayed-sampling method. Although the mixture sampling method is slightly less efficient than the delayed-sampling method, its advantage is clear when anticipation of observation times is a concern, and it is always more efficient than random sampling.

The efficiency of mixture distributions for sampling an alternating Poisson process (0,1 observations) is evaluated by the inverse ratio of the variance of the proportion estimate, p, to the binomial variance. The variance ratio presented by D.R.Cox (in Renewal Theory) for fixed interval sampling is generalized to accommodate a mixture of fixed interval and random sampling. The result is a sampling design tool allowing for quantifications of the effect of various spacings between observations and various mixtures. Direct application is made to the field of work sampling where the mixture model appears to be more practical than the fixed interval delay followe by random interval model previously presented by Pape.

The lost profit from lost business is quite difficult to be estimated for the queuing systems with cyclic demands. My previous work presented a creative and effective approach to formulate waiting cost as balking loss plus reneging loss. Using the estimation of waiting cost may allow decision makers to have the capability to determine the optimal number of servers for each planning period. Unfortunately, some queuing systems have trouble in extending the number of servers to earn more profit. Hence, an alternative way, the optimal pricing strategy, can be used to solve this capacity constraint problem. In this paper, the balking index and reneging index are introduced and formulated with discount level as three key parameters on maximizing the total profit.

Acute organophosphate (OP) poisoning causing alteration in acid-base equilibrium was reported before. Hence, different acid-base statuses may present in patients with acute poisoning due to OP exposure. This study aims to determine the impact of acid-base interpretation in patients with acute OP poisoning before hospitalization in medical care units and to describe the pattern of mortality with different acid-base statuses.Over a 9-year retrospective study, from July 1996 to August 2005, a total of 82 consecutive patients with acute OP poisoning were admitted to the China Medical University Hospital (Taichung, Taiwan) within 24 hours after exposure to OP and were enrolled into this study.Patients with acute OP poisoning were divided into 4 groups: without acidosis, metabolic acidosis, respiratory acidosis, and mixed acidosis. Overall survival (Kaplan-Meier curves) among groups was statistically significant (P.0001). The mortality rate of acute OP poisoned patients with metabolic acidosis was 25%, and 75% of those patients died of cardiovascular failure. The mortality rate of acute OP poisoning with respiratory acidosis was 50%, and 50% of those patients died of respiratory failure.Acid-base interpretation can be effective in quick diagnosis and prediction of the outcome of patients with acute OP poisoning (without acidosismetabolic acidosisrespiratory acidosismixed acidosis) before hospitalization. Major causes of death are different between the respiratory acidosis and metabolic acidosis groups of patients with acute OP poisoning.

This paper presents a queuing model for estimating business loss, although business loss is quite difficult to estimate. Balking index and reneging rate are used in the model to represent different configurations of balking behaviour and reneging behaviour respectively for different queuing systems. Using balking index and reneging rate enables decision makers to have the capability to estimate the incurred business loss for different values of balking index, reneging rate and service level. This model is an effective tool for linking the phases of operations management and perceptions management. With this linkage, managers can decide how to utilise these management techniques to reduce business loss and enhance customer satisfaction.

Although the profit loss from business resulting from queueing systems is quite difficult to estimate, this paper presents a creative and effective approach to formulating balking loss as waiting cost. The number of balking customers is estimated as the balking index θ multiplied by the expected queue length Lq and the mean arrival rate in that planning period λ. Estimating balking loss enables the decision maker to determine the optimal number of servers by minimising total cost, including service cost and balking loss. The practicality and the incurred benefits of this approach were analysed by using collected data from a fast food restaurant, using the SIPP M/M/S:(FCFS/∞/∞) queueing model. The results showed that this approach is an effective tool for aiding managers in formulating the optimal staffing policies of service systems.