Tardiness Research Articles

Evaluation Of Utility Functions For Minimization Of Total Weighted Tardiness In Machine Scheduling Using Grasp

This paper considers the total weighted tardiness minimization in a single machineenvironment (1|| wj Tj ) a scheduling problem which has been proved to be NP-Hard. The solution approach uses the Greedy Randomized Adaptive Search Procedure (GRASP) meta-heuristic known for the quality of the solutions it can generate and the selective ability of its utility function during the construction phase. This work proposes and analyses three different utility functions for the problem in question. A statistical study showed significant differences between the mean values obtained from the proposed utility functions. The computational experiments were carried out using problems instances found in the OR-LIBRARY, and the outcome of these experiments were competitive solutions compared to the best known values of the instances involved. This work also shows the ease of developing GRASP methods for solving scheduling problems in a simple spreadsheet software such as MS Excel.

Influence of pottery and weaving behavior therapy on rehabilitation of pafients with schizophrenia

Objective To explore the influence of pottery and weaving behavior therapy on rehabilitation of patients with schizophrenia.Methods 60 inpatients accorded with the diagnosis standard of CCMD-3 schizophrenia were selected as the research object, and were randomly divided into the intervention group and the control group.The antipsyehotie therapy wag adopted in the two groups.The intervention group received the pottery and weaving behavior therapy,and the control group only received the routine numing. Before and 12 weeks after the pottery and weaving behavior therapy,the patients were assessed and compared with NOSIE-30 (nurse observation scale for inpatient evaluation-30).Results Before the pottery and weaving behavior therapy.there was no statistical meaning in the scores of 7 factors(society ability,society interest, personal neatness,irritable bowel,representation of schizophrenia,depression and tardy factor)and the 3 total scores(P>0.05)in patients of the two groups.12 weeks after the pottery and weaving behavior therapy,the scores of NOSIE-30 in the intervention group were as follows.the total estimated score of disease station of (173.13±13.18),the total active score of(78.87±8.45),the society ability of (30.93±4.71),the society interest of (25.00±2.67) and the personal neatness factor of(22.93±3.27).These scores were obviously higher than those of the centrel group.with a statistical meaning(P<0.01).While the scores of irritable bowel(14.20±2.85),depression(6.27±3.23)and tardy factor(14.33±2.47)were obviously lower than those of the control group,with a statistical meaning(P<0.01).Conclusions The pottery and weaving behavior therapy improves the rehabilitation of society funetion of schizophrenia patients and ameliorates their part symptoms.So it has assistant function for rehabilitation of schizophrenia patients. Key words: Pottery; Weaving; Schizophrenia; Rehabilitation

The single-machine early-tardy Problem with Idle Time and Time Windows Permitted

In this article, a single-machine weighted earliness and tardiness problem with arbitrary time windows is considered. Idle time between two adjacent jobs is permitted and the due dates of jobs may be unequal. The dominance rules can be utilized to develop a relationship matrix which allows the branching algorithm to eliminate a high percentage of nonfeasible solutions. After this matrix is combined with a branching strategy, a procedure which can solve the problem is proposed.

A branch and bound algorithm for an identical parallel machine scheduling problem with a job splitting property

We focus on the problem of scheduling n independent jobs on m identical parallel machines with the objective of minimizing total tardiness of the jobs considering a job splitting property. In this ...

A REAL-TIME SCHEDULING AND RESCHEDULING SYSTEM BASED ON RFID FOR SEMICONDUCTOR FOUNDRY FABS

This paper constructs a real-time scheduling and rescheduling system based on RFID (Radio Frequency Identification) information for fully automated fabs. The system consists of three modules: a real-time decision-making scheduler, a rescheduling mechanism for machine breakdowns and bottleneck, and a simulation platform. The proposed scheduling and rescheduling system have been successfully applied to the 300mm foundry fab of SEMATECH (SEmiconductor MAnufacturing TECHnology) and TRC fab (Hewlett-Packard Technology Research Center Silicon fab). From simulation results, the dispatching rule sets proposed by SVM scheduler have better performance than a single dispatching rule. In SEMATECH model, the mean flow time is reduced 3%(203.32→197.307 hours), tardy numbers are decreased 17% (63→52 lots), and throughput is increased (176852→177951 wafers). In TRC fab model, the mean flow time is reduced 4% (451.23→427.86 hours) and tardy numbers are decreased 25% (15→12 lots). Clearly, the results are much better than previous researches. In addition, the proposed framework can deal with the machine breakdowns and bottleneck so that the system performance can be improved in time.

Endoscopic submucosal resection with ligation of rectal carcinoids: 3 years experience

To assess the value of endoscopic submucosal resection with ligation (ESMRL) in rectal carcinoids. 45 patients with rectal carcinoids, 20 males and 25 females, aged 58 +/- 18 (19 - 73), were treated with ESMRL from April, 2002 to April, 2006. The radical resection rate, complication rate, relapse rate, and metastasis rate were analyzed. Carcinoids accounted for 1.8% of the 24,600 cases undergoing colonoscopy at the same time. All the carcinoids were located 2 - 15 cm from anal border, with a mean diameter of (1.4 +/- 0.3) cm (0.3 - 2.0 cm). The endoscopic ultrasonographic (EUS) characteristic was a hypoechoic solid tumor in the superficial submucosa (24 cases, 53%) or in both the mucosa and submucosa (21 cases, 47%) without involvement of the muscularis propria. All patients received ESMRL of the rectal carcinoids, of which 34 cases (75.6%) needed more hemostasis of the incision margin. The mean operation time was (25 +/- 4) min. 7 cases (15.6%) with tardy bleeding 2 - 7 days after ESMRL needed endoscopic re-hemostasis, of which 3 cases (43%) showed oozing of blood from the muscle layer and another 4 showed oozing of blood or arterial bleeding from the incision border. No perforation or inflammatory was reported. 39 cases (86.7%) had negative margin in pathological examination, and the incision margins of the other 6 patients, as normal submucosal layer could not be seen outside the tumor envelope, could not be evaluated. But the tumor envelope was integrated without involvement of tumor and other biopsy results 7 days after ESMRL was negative. So no more therapies were selected. All 45 patients were followed up for 31 months (6 - 52 months), there was no metastasis, relapse and dead cases. ESMRL is an effective, safe, and minimally invasive method to deal with rectal carcinoids.

The Salvage and Nursing of Tardy -arrhythmia Induced by Acute Myocardial Infarction of Inferior Wall

目的 总结急性下壁心肌梗死发生缓慢性心律失常的抢救及护理经验.方法 对42例急性下壁心肌梗死致缓慢性心律失常患者进行严密心电监测,仔细分析及识别各种心律失常,作出正确的判断评估,采取不同的抢救及护理措施,严密观察抗缓慢性心律失常药物治疗效果,同时做好病人的心理护理.结果 本组42例急性下壁心肌梗死并发缓慢性心律失常病人得到及时的抢救、护理,无1例死亡.结论 护士严密观察病情,及时识别危险因素,采取有效抢救措施及护理措施是降低本病病死率的关键。

INFLUENCE OF NPK FERTILIZATION ON NUTRITIONAL QUALITY OF TOMATOES

s. The influence of the rate of fertilizer on tomatoes fruit quality aspects such as taste and content of nutritionally important compounds were investigated in this paper. The tomatoes were analyzed for suga r content, titrable acidity, vitamin C (ascorbic acid ), lycopene, phenolic compounds and total antioxida nt activity by FRAP. The experience was done in a cambic cernosium soil, with low acidity reaction and the high natural fertility potential favorable vegetables cultivatio n. The study was performed on control soil samples (without fertilizers) and soil samples after differentiated NPK fertilization in variable doses: N 30 P30 K30 , N 45 P45 K45 , N60P60 K60 , N 120 P60 K60 . The fertilization doses and the application metho ds in tomatoes fertilization were to determine in correlations between agro chemistry fa ctors. A field experiment was using tomatoes samples in di fferent precocity steady: early (Export II) and middle tardy ( Campbell 1327). The NPK fertilization doses were affect the quality of tomatoes fruit.

USING OF ORTHOPEDIC TECHNIQUES IN TREATMENT OF CHRONIC LAMINITIS IN HORSES

Laminitis is a modification of sangvin circulation from the keratogenic membrane level caused by histaminergic fodder or the endotoxines absorbed from bowels. It is sure that if the cases are in general known, the mechanisms which perturb the circulation from the level of podophilo-kerafilous gearing are difficult to be explained. Chronic form of laminitis in most of cases is the consequence of an incomplete or tardy treatment of the acute form of laminitis, seeing the very quickly evolution of it. Therefore, it is recommended that the treatment of the acute form of laminitis to be institute as much as quickly possible, otherwise the inflammatory phenomenons of the keratogenic membrane will advance very quick, even after 12 hours, thus this form go into chronic form and are installed grave morphopathological changes and in most of cases these are irreversible. In chronic form of laminitis, appear aseptic necrosis modifications of keratogenic membrane, separation between podophilous and keraphilous lamina and possibility of displacement of the third phalanx (P3) with topographical modification of it, from oblique position in upright position, sometime with perforation of solear surface of hoof. Therefore we wanted to assess and make the orthopedic and treatment possibilities of improving this chronic form of laminitis.

APS with Multi-objective in Make-to-Order Process Using Hybrid Genetic Algorithm

Recently, manufacturers with make-to-order (MTO) tend to use a flexible flows strategy, because they have to the job shop type production and small batch production to satisfy customer requirements. In this environment, the scheduling problems have complexities. The space of feasible schedules grows exponentially as there increase the number of different orders that must be processed, number of operations required by each order, batch size of each order, and the size and complexity of the installation of interest. In this paper, we propose an advanced production scheduling (APS) model with multiple objectives to generate the schedules considering resource constraints and precedence constraints in MTO process. Precedence of work-in-process and resources constraints, in APS problems, have recently emerged as one of the main constraints. The APS problems are formulated as a multi-objective mathematical model for generating operation schedules which satisfies resources constraints, alternative resources and the precedence constraints. The model is to minimize the makespan, total flow time of order, and maximum tardiness for each order, simultaneously. For effectively solving the APS model, the hybrid genetic algorithm (hGA) with local search-based mutation through swap mutation is proposed. Experimental results are presented for APS models with multi-objective of various sizes to describe the performance of the proposed hGA.

H. Behrbohm, M.E. Tardy Jr : Essentials of Septorhinoplasty

H. Behrbohm, M.E. Tardy Jr : Essentials of Septorhinoplasty

Tardy travellers are risking disease

Tardy travellers are risking disease

The Arbitration of Tardiness Cases

The Arbitration of Tardiness Cases

A Blackboard-Based Scheduling Expert System

Scheduling jobs effectively under consideration of actual loads on machines is one of the most complicated tasks in production control. The complexity of the finite capacity scheduling often makes the conventional methods of industrial engineering fail. As an alternative, Knowledge-based approaches to job-shop scheduling have been evolved recently. This paper presents a blackboard- based scheduling expert system which combines knowledge-based scheduling with interactive scheduling. It is shown to be possible to generate the feasible schedule within a reasonable time. Flexible reaction management is also possible while keeping the changes in the generated schedule to the minimal and adjusting the schedule to tardy operations or working environmental changes. The system is equipped with a rule base with heuristics for handling conflicted event. A case study applying the implemented system is described.

Weighted Tardiness Single Machine Scheduling with Proportional Weights

This paper considers Arkin and Roundy's single machine weighted tardiness scheduling model with tardiness penalties proportional to the processing times. It presents a two-stage decomposition mecha...

Steroid regulation of thiazide-sensitive transport.

HE STUDY of regulation by steroid hormones of the reabsorption of sodium and chloride inhibitable by diuretics of the thiazide ( 1,2,4-benzothiadiazine- 1,l -dioxide) class has lagged a decade or more behind studies of steroid action in other portions of the nephron. This tardiness can be attributed primarily to three factors. First, the complexity and structural segmentation of the “distal tubule” had not been appreciated. Second, the segment of the nephron in which thiazide-type diuretics exert their action-pharmacologically identified as “the cortical diluting segment”-appeared to be portion of the nephron that was poorly accessable to micropuncture-the early cortical distal nephron. Third, no radioactive “marker” of the thiazide-sensitive transporter (that is, of the “thiazide receptor”) was available. I shall discuss a current view of each of these areas.

Sequencing with earliness and tardiness penalties: a review

Sequencing with earliness and tardiness penalties: a review

One-Processor Scheduling with Symmetric Earliness and Tardiness Penalties

We consider one-processor scheduling problems having the following form: Tasks T1, T2,..., TN are given, with each Ti having a specified length li and a preferred starting time ai or, equivalently,...

Priority Rules for Job Shops with Weighted Tardiness Costs

Mainstream research in priority dispatching has considered jobs with equal delay penalties, thereby ruling out strategic differentiation of customer orders. We develop and test efficient dispatchin...

Punctuality and tardiness in supplying labor

Punctuality and tardiness in supplying labor