The traditional models of evaluating human resources are mainly based upon the discounted value of future payment, but these models fail to take the employment risk into account, and often neglect the uncertainty and ...The traditional models of evaluating human resources are mainly based upon the discounted value of future payment, but these models fail to take the employment risk into account, and often neglect the uncertainty and underes- timate the human resource value. This paper first introduces the option theory, and then presents human resources as the real commodity for the call option. Second, concerning the choices for the uncertainty decision, the decisions of delay- ing the employment of the human resources, expanding or deducing the scale of human resources, giving up or chang- ing human resources, etc., are made to deal with the future uncertainties appropriately. This will cause the investment to be more beneficial or to reduce the loss. Finally, the expand option theory of real options is used to evaluate the value of reinvestment in human resources, and the expand option theory could be provided as a reference for management im- plementation and decision-making in human resources.展开更多
Objective: To study the CT imaging of primary large bowel lymphoma and evaluate the value of CT scan. Methods: CT reports of 8 patients with proven primary large bowel lymphoma were retrospectively reviewed. Plain CT ...Objective: To study the CT imaging of primary large bowel lymphoma and evaluate the value of CT scan. Methods: CT reports of 8 patients with proven primary large bowel lymphoma were retrospectively reviewed. Plain CT scans were done on all patients, enhanced CT scans simultaneously with 5-10 mm section thickness, and 5-10 mm table increments in 6 cases. Results: Primary involved sites were on the cecum (n=3), the ascending colon (n=2), and the rectum (n=1). The tumor was found in multiple areas of the large bowel in 2 cases. CT appearance fell into 3 typical patterns in our study. The first was focal mass type in 2 cases, with one combined with intussusception and retroperitoneal adenopathy; the second was segmental annular involvement type in 3 cases, with one of them combined with mesenteric adenopathy; the last was diffuse involvement type in 2 cases. Multiple nodules were seen in the rectum in 1 case. Conclusion: CT was found to be accurate in detecting the primary sites and complications of lymphoma, and evaluating invasion of adjacent structures; Focal mass type, segmental annular involvement type and diffuse involvement type are the main patterns of CT features in the primary large bowel lymphoma; The features revealed by CT scan are suggestive of primary large bowel lymphoma in some cases.展开更多
基金Projects BJY043 supported by National Social Science Foundation of China and NJ04013 supported by Inner Mongolia Education Bureau Higher EducationResearch
文摘The traditional models of evaluating human resources are mainly based upon the discounted value of future payment, but these models fail to take the employment risk into account, and often neglect the uncertainty and underes- timate the human resource value. This paper first introduces the option theory, and then presents human resources as the real commodity for the call option. Second, concerning the choices for the uncertainty decision, the decisions of delay- ing the employment of the human resources, expanding or deducing the scale of human resources, giving up or chang- ing human resources, etc., are made to deal with the future uncertainties appropriately. This will cause the investment to be more beneficial or to reduce the loss. Finally, the expand option theory of real options is used to evaluate the value of reinvestment in human resources, and the expand option theory could be provided as a reference for management im- plementation and decision-making in human resources.
文摘Objective: To study the CT imaging of primary large bowel lymphoma and evaluate the value of CT scan. Methods: CT reports of 8 patients with proven primary large bowel lymphoma were retrospectively reviewed. Plain CT scans were done on all patients, enhanced CT scans simultaneously with 5-10 mm section thickness, and 5-10 mm table increments in 6 cases. Results: Primary involved sites were on the cecum (n=3), the ascending colon (n=2), and the rectum (n=1). The tumor was found in multiple areas of the large bowel in 2 cases. CT appearance fell into 3 typical patterns in our study. The first was focal mass type in 2 cases, with one combined with intussusception and retroperitoneal adenopathy; the second was segmental annular involvement type in 3 cases, with one of them combined with mesenteric adenopathy; the last was diffuse involvement type in 2 cases. Multiple nodules were seen in the rectum in 1 case. Conclusion: CT was found to be accurate in detecting the primary sites and complications of lymphoma, and evaluating invasion of adjacent structures; Focal mass type, segmental annular involvement type and diffuse involvement type are the main patterns of CT features in the primary large bowel lymphoma; The features revealed by CT scan are suggestive of primary large bowel lymphoma in some cases.
