Dimensions of career indecision.

[Correction Notice: An erratum for this article was reported in Vol 37(2) of Journal of Counseling Psychology (see record 2008-10626-001). Editorial error resulted in several misstatements. On page 98, second column, in the 11th line of the second paragraph, the word students ought to read studies; on page 101, in the 9th line, the word Behaviors ought to read Barriers. On page 102, in line 5 of the first paragraph, the reference ought to be to the top left panel of Figure 2. The second paragraph ought to begin with the reference to the top right panel of Figure 2. Also on page 102, the sentence that begins on line 5 of the first paragraph was intended to read, as follows: Two of the groups of girls changed significantly in the expected direction: Group 2 (decided-undecided) significantly increased and Group 3 (undecided-decided) significantly decreased over time.] Recent studies have clarified the factor structure of the Career Decision Scale (CDS), thereby permitting the construction of 4 linearly independent scales to measure dimensions of career indecision. The CDS was administered to 465 junior and senior high school students. The study examined whether the CDS total score and the 4 subscales were related to the students' career decision status, grade level, and gender. Data were collected twice, 6 months apart, to study whether changes in decision status were accompanied by changes in the CDS total score and the 4 subscales and whether these changes differed according to gender or grade level. In addition, a subsample was followed for 3 years to examine long-term change. The results demonstrated the utility of using factor-based subscales to create a typology of career indecision. Many significant differences on the various indecision scales were found to be due to gender and to career decision status but not to grade level. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Freezing of a water droplet due to evaporation—heat transfer dominating the evaporation–freezing phenomena and the effect of boiling on freezing characteristics

One of the authors has proposed a novel transport/storage system for the waste cold from the gasification process of liquefied natural gas (LNG), which consists of an evaporator, a cold trap, and a pipeline. In order to estimate the performance of this system, one should know the pressure in the evaporator, in which evaporation–freezing of a PCM occurs, and in the cold trap, as well as the pressure drop of the pipeline due to the flow of low pressure vapor of the PCM. In this paper, the cooling/freezing phenomena of a water droplet due to evaporation in an evacuated chamber was experimentally examined, and the heat transfer dominating the evaporation-freezing phenomena was investigated in order to estimate the pressure in the evaporator. From the results, it was shown that the water droplet in the evacuated cell is effectively cooled by the evaporation of water itself, and is frozen within a few seconds through a remarkable supercooling state, and that the cooling rate of the water droplets were dominated by heat transfer within the droplet under the abrupt evacuation condition. The later result means that, in order to obtain an ice particle by evaporation–freezing, the surroundings of the water droplet should be evacuated at the pressure as low as the saturate pressure of water at the maximum supercooling temperature of the droplet.     

Ion beam analyses of surface films formed on amorphous Fe12Mo18C alloy in 1 N HCl

The Rutherford backscattering with 2 MeV He⁺ and the ¹⁶O(d,p)¹⁷O¹ nuclear reaction with 1.8 MeV D₂⁺ were utilized to determine the concentration profiles of iron, molybdenum and oxygen in the surfaces of an amorphous Fe12Mo18C alloy polarized in 1 N HCl at potentials from ? 0.17 to 1.6 V(SCE). The thickness of the surface film was estimated as 20–200 nm. In the primary active region, selective dissolution of iron and carbon causes enrichment of molybdenum ions in the corrosion product film and of metallic molybdenum in the topmost part of the underlying alloy. A further potential increase led to a decrease in the molybdenum content in the film by transpassive dissolution. Molybdenum ions were not concentrated in the film formed in the stable passive region of 0.5–1.5 V(SCE). The high passivating ability of the amorphous alloy even in the aggressive HCl was ascribed to the homogeneity of the alloy structure as well as to the effect of molybdenum.     

Preparation of high-modulus and high-strength poly(ethylene terephthalate) fiber by zone annealing

To prepare high-modulus and high-strength PET fiber, a new method using zone drawing and zone annealing has been studied. The apparatus used for this method is the usual tensile tester equipped with a band heater 2 mm wide and a sample holder which can apply a high tension to the fiber. The experimental procedure consists of two stages: zone drawing and zone annealing. The zone drawing was done on the original as-spun fiber in order to produce a fiber with as high an orientation and as low a crystallinity as possible. The zone-drawn fiber was subsequently zone annealed under high tension by moving the band heater from one end to the other of the fiber at a temperature above the crystallization temperature at a considerably low moving speed. In spite of the simple apparatus and procedure, Young's modulus of the fiber obtained was 19.4 × 10¹⁰ dyn/cm², which is comparable to the maximum value of the high-tenacity PET filament commercially available. In order to elucidate the change in the superstructure with zone drawing or zone annealing, optical, x-ray, IR, DSC, and dynamic mechanical measurements were performed. It is suggested that the zone-annealed fiber consists of almost perfectly oriented crystallites and fully extended amorphous chains.