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Search Results: 1 - 10 of 608 matches for " Izumi Ushiyama "
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Realization and Analysis of a Triple Hybrid Power System Consisting of Biomass, Wind and Solar Generators
Zulati Litifu,Yasuyuki Nemoto,Izumi Ushiyama,Ken Nagasaka
International Journal of Electrical and Power Engineering , 2012,
Abstract: This study presents a realization process of a hybrid system consisting of biomass and wind as well as solar power generation on the ground of Ashikaga Intitute of Technology located in Ashikaga City of Tochiki Prefecture. The installation principle and procedure are introduced based on the conditions of natural energy such as wind speed and solar rediation degree. The output characteristics from 20 kW biomass generator is explained and analyzed in according to cooperational possibility with the wind power and solar power system. The operation characteristics of 40 kW wind power turbine is provided based on the practical operation data collected within three years and the simulated results obtained from the software calculation. The operation conditions of 20.6kW solar power system is also anaylzed based on the solar irrediance desity in the located site. The general efficiency of this triple hybrid power system in ecomomic and environment aspects is also studied by using and comparing the simulation methodology and the data in practical operation.
Improving the Reliability of a Weak Power System by Introducing Wind Power Generation
Zulati Litifu,Noel Estoperez,Ken Nagasaka,Yasuyuki Nemoto,Izumi Ushiyama
International Journal of Electrical and Power Engineering , 2012,
Abstract: Granted by research project of Japan Society for the Promotion of Science (JSPS), this research provides planning of installing Wind Power Turbine (WPT) in an existing Local Weak Power System (LWPS). Wind power generation is expected to be used as a power reserve to improve the reliability degree and reduce line loss of LWPS, that suffers from critical load in each summer. Installation buses are selected based on the existing reliability degree derived from system condition in energy service and load demand, two reliability indices namely Weakness Degree in Energy Supply (WDES) that represents bus energy supply ability in a short critical time and Reliability Index in Energy Supply (RIES) that represents bus average energy supply ability during annual time are applied. Appropriate type of WPT is selected according to Percentage Rate of Availability Index (PRAI) and Percentage Rate of Utilization Index (PRUI) derived from Monthly Average Wind Speed (MAWS) through the target region. Operational reliability and stability are analyzed based on formed system characteristics after introducing WPT.
A Research on Electric Fluctuation and System Limitation of Wind Power Generation in a Weak Power System
Zulati Litifu,Ken Nagasaka,Yasuyuki Nemoto,Izumi Ushiyama
International Journal of Electrical and Power Engineering , 2012,
Abstract: This study provides an applicable process for introducing wind power generaton into a weak power system regarding the fluctuation of electric parameters so as to determine the installable limitation. The static and dynamic operational situation of a Wind Power Turbine (WPT) that relates to terminal output and connection system are detailly explained. Characters of inductive generator under sudden variation of wind speed and short circiut has been introduced. Wind and generation matrixes are applied for regional wind condition. The methods to determine optimal bus are considered by regarding sytem load particularity. The electric fluctuation of system parameters is analyzed in each bus of substation system. installable limitation is tested regarding fluctuation range of target parameters.
Public health nurse observations of behavioral characteristics of fathers who contribute to the emotional instability of mothers, as presented in cases of infant abuse  [PDF]
Izumi Ueda
Open Journal of Nursing (OJN) , 2013, DOI: 10.4236/ojn.2013.33041

The objective of this study is to look at the understanding and perceptions of public health nurses (PHNs) related to behavioral characteristics of fathers that contribute to emotional instability in mothers by reviewing abuse cases involving infants and very young children. A qualitative descriptive design was applied to the data analysis, based on a semi-structured interview administered to three experienced PHNs who had been in charge of maternal and child health services for at least five years at a public health department or health center; with the data obtained in the interview narratives analyzed. In the observations of the experienced PHNs, the behavioral characteristics of fathers who are instigators of child abuse can be classified into five categories, fathers who are: “Talking to others about marital problems without attempting to solve these by themselves”, “Working on learning about childcare seeking to correct childcare methods”, “Taking the initiative in childcare at cross purposes with mothers”, “Stressing the effort they (the fathers) put into childcare”, and “Failing to notice the own family situation and problems”. The findings of the study suggest the necessity for PHNs to understand fathers, to be aware of the difficulty of building a supportive relationship with fathers, and to improve skills enabling the PHNs to help fathers form good relationships with other family members.

Left-Right and Up-Down Mirror Image Confusion in 4-, 5- and 6-Year-Olds  [PDF]
Izumi Uehara
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.410104

Young children under the age of 8 - 9 years tend to confuse left-right mirror images, and it is thought that their linguistic skills play a crucial role in this phenomenon. However, other aspects of this confusion, such as whether children confuse up-down mirror images or whether the meaningfulness of the stimulus influences matching performance, remain unclear. The present study examined the confusion of left-right and up-down reversed images by 4-, 5- and 6-year-olds using meaningful and meaningless figures in a task in which sample and comparison stimuli were presented simultaneously. Children performed more accurately when presented with meaningful figures and confused both up-down and left-right reversed figures, although they did so less frequently in response to up-down than to left-right reversed figures. Reversal confusion was greatest in 4-year-olds and no significant differences were observed between 5- and 6-year-olds. These findings suggest that the ability to discriminate reversed images may be associated with the development of a wide range of cognitive abilities including theory of mind, executive function, and suggestibility.

Support Provided by Public Health Nurses for Fathers Who Have Abused Their Children—As Observed in Cases of Child Neglect and Physical or Psychological Abuse  [PDF]
Izumi Ueda
Open Journal of Nursing (OJN) , 2016, DOI: 10.4236/ojn.2016.62014
Abstract: This study aims to identify the support to provide to fathers who have abused children as reported by public health nurses (PHNs). In this study, a qualitative descriptive design was applied to the data analysis. Interviewees were 10 public health nurses (PHNs) in charge of child abuse services for at least 5 years at public health centers. The study analyzed 13 cases reported in the interviews. Measures to support fathers who abuse their children as suggested by PHNs were classified into direct support to the father, support to other family members, and support to be provided by others involved including related organizations. The direct support to the father includes “gaining an in-depth understanding of the abusive situation and psychological states of those involved”, “refraining from involvement in areas where it is difficult to understand the personality of the father”, and others. Support of other family members includes “understanding the marital relationship and assessing the qualities of the relationship”, “refraining from matters that will involve divorce”, and others. Support to be provided by others including related organizations includes “understanding the value of social exchange and assessment of the ability to create and maintain interpersonal relationships”, “establishing support arrangements to enable intervention when necessary”, and others. The interviews report that PHNs arrange support measures that enable intervention as it becomes required, and that this enables learning about child-abuse preventing activities.
Identification of the Bacterial Gene in Patients Who Repeatedly Develop Streptococcal Pharyngitis  [PDF]
Yuichiro Tsuji, Ichihashi Izumi
International Journal of Clinical Medicine (IJCM) , 2012, DOI: 10.4236/ijcm.2012.37121

Background: We aimed at determining whether the pathogenic bacteria at the onset of disease are genetically different and whether this affects future choice of the therapeutic methods against group A β-hemolytic streptococcal acute pharyngitis/tonsillitis. Methods: A pharynx swab was collected from pediatric patients who visited our hospital. The swab was cultured, and hemolytic streptococcus was detected 230 times. We isolated pathogenic bacteria of patients infected more than once and examined the bacteria using pulse-field gel electrophoresis. Results: Based on gene search results, we found that if the period of developing relapse was within 1 month from the first infection, all patients had the same gene. However, all patients in whom reinfection occurred after 6 months or later had different pertinent genes. Conclusions: The number of relapse/reinfection is significant for this disease, and considerably caution is essential for its treatment. No changes to antibacterial drug administration may be necessary for the second administration unless more than 6 months have passed since the first infection.

Transformation of CSD When Crystal Shape Changes with Crystal Size into CLD from FBRM by Using Monte Carlo Analysis  [PDF]
Joi Unno, Izumi Hirasawa
Advances in Chemical Engineering and Science (ACES) , 2017, DOI: 10.4236/aces.2017.72008
Abstract: In manufacturing process, it is necessary to measure change in CSD (Crystal Size Distribution) with time accurately because CSD is one of the most important indices that evaluate quality of products. FBRM (Focused Beam Reflectance Measurement) can measure CLD (Chord Length Distribution) in line, but CLD is different from CSD because of principle of FBRM. However, if CSD is determined beforehand, CLD can be calculated from the CSD with statistical method. First, when crystal shape is defined from the characteristic crystal size, the matrix of each crystal shape which transforms CSD into CLD in a uniform manner is calculated with Monte Carlo analysis. Characteristic crystal size is added to the variables defining chord length in order to avoid complex integrals and apply the change in crystal shape with characteristic crystal size to the transforming matrix. Secondly, CSD and CLD are actually measured in suspension of acetaminophen in ethanol and suspension of L-arginine in water to demonstrate the validity of 2 matrices. Lastly, these matrices are multiplied by some simple CSD models to test the properties of these matrices and demonstrate the utility of this transformation.
Psychosocial Characteristics of Fathers Who Have Abused Their Children as Seen by Public Health Nurses  [PDF]
Izumi Ueda, Hisako Izumi, Kazuko Saeki, Kyoko Namikawa, Mizue Shiromaru
Open Journal of Nursing (OJN) , 2014, DOI: 10.4236/ojn.2014.49071

This study aims to identify details of the psychosocial characteristics of fathers who have abused children as they appear to public health nurses (PHNs). In this study a qualitative descriptive design was applied to the data analysis. Interviewees were 10 public health nurses (PHNs), in charge of maternal and child health services for 5 or more years at public health centers. The study analyzed 13 cases reported in the PHNs interviews. The characteristics of the fathers who had abused children as seen by the PHNs were the psycho-social characteristics of ‘weak suppression and control of impulsiveness’, ‘cognitive dissonance in the fatherhood role’, ‘poor social sensitivity’, ‘unbalanced relationship with other members of the family’ and ‘weak relationships with people around the father’. The father’s impulsiveness and cognitive dissonances in the fatherhood role are associated with weaknesses in the family relationships and social adaptation. Conversely, the weakness in the strength of family relationships and social adaptation affects the father’s ability to control impulsiveness and give rise to the cognitive dissonance in the fatherhood role. These in turn interact to create a negative downward spiral, a steadily worsening situation. The findings of this study suggest the necessity for PHNs to focus on the background to the cognitive dissonance in the fatherhood

Things Asian Music Therapists should Learn
Izumi Futamata
Voices: A World Forum for Music Therapy , 2005,
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