Chien-Lung Chan

The impacts of user review on software responsiveness: Moderating requirements uncertainty

Rapidly changing business environments and evolving processes increase the uncertainties in IS development. To produce a high-quality system that responds to user needs is challenging. We attempted to determine whether user reviews during the development process could reduce uncertainties and improve the product. Technology structuration theory indicated that users, as actors participating in reviews during the development of a system, could help reduce uncertainty in the organizational requirements and thus improve the software product. A survey of system developers indicated that user requirements uncertainty had a direct, negative effect on software responsiveness but that user review, serving as a moderator, could reduce this effect.

The impact of software process standardization on software flexibility and project management performance: Control theory perspective

It has been assumed for years that process standardization in the development of software will improve the efficiency of the development project by the virtues of applying a learned procedure and tight controls. Past research, however, is inconclusive in the elements that must be in place to achieve the benefits. In this study, we employ the software quality principle of flexibility as a mediator variable to determine if certain design aspects play a key role in achieving the benefits to the project of process standardization. A survey of computer professionals indicates that software flexibility is a positive influence. System designers should apply standard processes but with an eye toward quality design principles.

Epidemiological survey of orthopedic joint dislocations based on nationwide insurance data in Taiwan, 2000-2005

BackgroundThe epidemiology of acute orthopedic dislocations is poorly understood. A nationwide database provides a valuable resource for examining this issue in the Taiwanese population.MethodsA 6-year retrospective cohort study of 1,000,000 randomly-sampled beneficiaries from the year 2005 was used as the original population. Based on the hospitalized and ambulatory data, the concomitant ICD9-CM diagnosis codes and treatment codes were evaluated and classified into 8 and 3 major categories, respectively. The cases matching both inclusive criteria of dislocation-related diagnosis codes and treatment codes were defined as incident cases.ResultsDuring 2000-2005, the estimated annual incidence (per 100,000 population) of total orthopedic dislocations in Taiwan was 42.1 (95%CI: 38.1-46.1). The major cause of these orthopedic dislocations was traffic accidents (57.4%), followed by accident falls (27.5%). The annual incidence dislocation by location was shoulder, 15.3; elbow, 7.7; wrist, 3.5; finger, 4.6; hip, 5.2; knee, 1.4; ankle, 2.0; and foot, 2.4. Approximately 16% of shoulder dislocations occurred with other concomitant fractures, compared with 17%, 53%, 16%, 76% and 52%, respectively, of dislocated elbow, wrist, hip, knee, and ankle cases. Including both simple and complex dislocated cases, the mean medical cost was US

Estimated prevalence of orthopaedic fractures in Taiwan—A cross-sectional study based on nationwide insurance data

612 for treatment of a shoulder dislocation,

A Hybrid Electromagnetism-Like Algorithm for Single Machine Scheduling Problem

504 for the elbow,

Using an integrated COC index and multilevel measurements to verify the care outcome of patients with multiple chronic conditions

1,232 for the wrist,

Team Task Skills as a Facilitator for Application and Development Skills

1,103 for the hip,

Decision model for acute appendicitis treatment with decision tree technology--a modification of the Alvarado scoring system.

1,888 for the knee, and

Intelligence modeling for coping strategies to reduce emergency department overcrowding in hospitals

1,248 for the ankle.ConclusionsIn Taiwan, three-quarters of all orthopedic dislocations were of the upper limbs. The most common complex fracture-dislocation was of the knee, followed by the wrist and the ankle. Those usually needed a treatment combined with open reduction of fractures and resulted in a higher direct medical expenditure.

Mining association language patterns using a distributional semantic model for negative life event classification

BACKGROUND Injury is the most common diagnostic category in the emergency unit, but no survey of epidemiological data for trauma or orthopaedic fractures has been made to date in Taiwan. A nationwide study of orthopaedic injuries is therefore necessary and would be of benefit to the Taiwanese population. METHODS A qualified dataset, provided by a governmental authority, containing the original claims data of 1,000,000 randomly-sampled claimants from the year 2005 in Taiwan was analyzed, and a survey was made of 12 categories of orthopaedic fracture based on the ICD9-CM codes using two sets of data: inpatient data and ambulatory care data. RESULTS The prevalence of orthopaedic fractures in Taiwan was estimated to be 234.9 (95% CI: 226.8-235.0) per 10,000 for ambulatory visitors and 61.2 (95% CI: 59.7-62.7) per 10,000 for inpatients. After combining these two datasets, the overall prevalence of fractures of various bones were estimated to be as follows (per 10,000): clavicle or scapula, 16.8; humerus, 15.9; radius or ulna, 38.6; carpal, metacarpal or phalanges, 31.5; femoral neck, 17.4; femur, 13.5; patella, 6.1; tibia or fibula, 24.8; ankle, 13.1; tarsal, metatarsal or foot phalanges, 22.7; vertebrae, 42.4; and pelvis, 4.6. The estimated lifetime prevalence of any fracture was calculated at 23.4% for female and 15.8% for male Taiwanese aged 85 years. CONCLUSIONS The prevalence of various orthopaedic fractures increases with age, and a higher prevalence of orthopaedic fractures but a lower admission rate were found in Taiwan in comparison with other countries. In addition, the estimated lifetime fracture rates for men and women were more equal and lower in Taiwan than in other countries.