An Analytic Model to Represent Relation between Finish Date of Job-Hunting and Time- Series Variation of Entry Tendencies

Seiya Nagamori,Kenta Mikawa,Masayuki Goto,Tairiku Ogihara 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.3

Currently, most university students in Japan use Internet portal sites for job-hunting activities. However, job-huntingactivities are sometimes prolonged owing to a mismatch between a student and the company requirements. To solvethis problem, it is important to find the students who may not be able to finish job-hunting early; this goal can beachieved by utilizing user behavior log data stored on an Internet portal site. This study proposes appropriate statisticalmodel based on a latent class model. Specifically, we also apply clustering approach and takes account of timeseriesvariation. The proposed model enables us to analyze entry patterns from the viewpoint of time-series variationof job-hunting activities and to predict the finish date of job-hunting for each cluster. Through the simulation experiments,the effectiveness of the proposed method was clarified. We used actual data of students’ activities from an Internetportal site to demonstrate the effectiveness of the proposed method that considers the time series of the entrytendency of student users. By considering the time shift of students’ preferences, it became possible to extract studentswho tend to struggle in job-hunting activities. It is possible to specify students who should be supported by using theproposed model.

Late Cenozoic Molluscan Fauna and its Paleo - Oceanographical Significance in the Eastern Margin of the Sea of Japan - Part 1 the Latest Miocene and Early Pliocene Northern Fossa Magna Region

( Hideaki Nagamori,Iwao Kobayashi ) 한국고생물학회 1997 Abstract volume Vol.- No.-

Late Cenozoic Molluscan Fauna and its Paleo - Oceanographical Significance in the Eastern Margin of the Sea of Japan - Part 2 the Plio - Pleistocene Niigata Region

( Iwao Kobayashi,Hideaki Nagamori ) 한국고생물학회 1997 Abstract volume Vol.- No.-

Design and Fabrication of Devices for Investigating Cell-sheet Stretch

Yang Liu,Yoshihiro Ojima,Masanobu Horie,Eiji Nagamori,Hideaki Fujita 한국바이오칩학회 2017 BioChip Journal Vol.11 No.3

Recently, many efforts have been made to investigate the cell stretch response through focal adhesions, which are usually utilized by cells cultured on elastic materials. However, not all stretch sensing is mediated through focal adhesions but from cell-cell contacts such as adherence junctions. To unveil the details of the stretch-sensing mechanism through cellcell contacts, we developed a cell-sheet extension device for visualizing dynamic changes of individual living cells induced by external mechanical stretch. A cell-sheet is an ideal observation object, as it can be comprised merely of cells without any mechanical influences from external matrices while maintaining normal cell-cell adhesions as in the in vivo situation. Two microfluidic extension devices were designed and fabricated using a silicone elastomer, which were capable of extending a cell-sheet made from Caco-2 cells up to 1.3- and 1.5-fold from its original state. Based on the obtained results, we expected that such cell-sheet extension systems can be useful tools for understanding the mechanisms of cellular stretch sensing through cell-cell contacts in living cells.

Proceedings of Korea-Japan Special Symposium on Technology and R&D Trends on Inorganic Waste Recycling : Emission of non-methane aliphatic hydrocarbons from waste Landfills

( Tomonori Ishigaki ),( Masato Yamada ),( Masanao Nagamori ),( Yusaku Ono ),( Yuzo Inoue ) 한국폐기물자원순환학회(구 한국폐기물학회) 2005 한국폐기물자원순환학회 심포지움 Vol.2005 No.1

Microstructure Control of Grain-oriented Barium-titanate Ceramics and Their Piezoelectric Properties

Petr Pulpan,Rintaro Mori,Hiroshi Hayashi,Yoshitaka Nagamori,Yuichi Yamamoto,Satoshi Wada 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.41

A templated grain growth (TGG) method was used for the preparation of grain-oriented bariumtitanate (BaTiO3, BT) ceramics. [110]-oriented BT plate-like template particles were dispersed in a matrix of hydrothermal BT spherical particles of various sizes. The Lotgering method using the Xray diffraction (XRD) pattern determined the degree of orientation along the [110] direction (F110). An optimization of the preparation conditions was performed in terms of the template-to-matrix weight ratio (T/M), the Ba/Ti ratio, and the sintering temperature and time in order to achieve a high F110 along with a small grain size and a high density. A grain size as small as 10 µm could be reached for Ba/Ti ratios close to the stoichiometric value. Lower values led to an increase in F110 and in the grain size. A T/M bigger than 80% was necessary for F110 to be above 80% and for the grain size lower than 40 µm. The density was almost independent of the T/M and the Ba/Ti ratios. The grain growth was limited by a two-step sintering process. Small grain size, high F110 and high density are essential if the piezoelectric constant d33 is to be increased above the values for standard BT ceramics.

Monitoring of Hydrogen Sulfide from an Industrial Waste Landfill in Japan

( Noppharit Sutthasil ),( Tomonori Ishigaki ),( Yuka Ogata ),( Kazuto Endo ),( Masato Yamada ),( Masanao Nagamori ),( Osamu Oishi ),( Yoshinori Yabuki ),( Tanaka Hirokazu ) 한국폐기물자원순환학회(구 한국폐기물학회) 2018 한국폐기물자원순환학회 심포지움 Vol.2018 No.1

Landfill management in Japan was developed more than Centuries. At industrial rapid growth era, numbers of waste were disposed with less control, such as co-disposal of Construction and Demolition waste (C&D waste) and organic Municipal Solid Wastes (MSW). Generally, Hydrogen sulfide (H₂S) is detectable in ppm by human as odor, but more seriously it causes toxic effect in hundreds ppm. H₂S is often generated in landfill containing sulfate source (such as gypsum board) and organic waste thorough the activity of the Sulfate Reducing Bacteria (SRB). This study was carried out to investigate the emission behavior and environmental parameters related to H₂S generation in a landfill under aftercare phase, which has been disposed of C&D waste, and to develop the methodology to assess the environmental situation in landfills to be monitored. This survey was also involved in the project that aim to develop the methodology of appropriate management of the landfills. The objected landfill was located nearby the river and was operated by private sector. After the “standard of landfill disposal” regulation was enforced in Japan, this landfill was closed and started to monitoring. Figure 1 shows schematic of geological section of landfill, the area of dumping was mountainous, North and Eastern side of landfill was mounted to the hill called ‘Upper Zone’. South and Western side called ‘Lower Zone’. The slope of landfill surface was from upper to lower part. The approximate landfill surface is 4000 m². Landfill investigation was conducted on October 2017. The location for measurement of surface gas emission by static chamber method was selected by grid placing. Soil gas concentration was measured by a gas analyzer and gas detecting tube. Water quality from landfill layer in monitoring well was analyzed in laboratory. The results show H₂S gas was detected 5 out of 29 grid points from 0.7 m beneath cover soil in range 0.2-800 ppm. These H₂S gas concentrations were related to surface H₂S emissions which emitted in range 0.3-37.7 l/m²/d. The detected H₂S emitted points were located at the lower zone of this landfill. In the same area, CH₄ emission were found in 10 out of 29 points in range 0.1-62.7 l/m²/d. H₂S emission and CH₄ emission were negatively correlated. In contrast to the lower zone, CH₄ emission was detected at few points and no H₂S gas was found at the upper zone. It is widely known that SRB and Methane Generating Bacteria inhabited or competitive of carbon source under anaerobic condition. Landfill gas results indicated that anaerobic degradation was comparably active in lower zone due to the existing of organic matter inside waste body. To compare biogas generation from lower and upper zone, CH₄ and CO₂ emissions from lower zone was about 10.1 and 3.2 times higher than that from upper zone, respectively. The higher degradation rate explain by the different amount of organic matter from upper to lower zone. Quality of inner water of landfill layer in the monitoring wells which located in lower zone were analyzed. The SO₄ concentration were in range 110-710 mg/l. Low concentration of dissolved oxygen (0.68 mg/l) and remaining of organic carbon (33.7 mg/l) were confirmed in inner water of landfill. These would possibly provide condition of H₂S generation. From the result, landfill gas emission still active even the landfill already close for several years. It could suggest that the intensive and log-term monitoring program for this landfill must be necessary. It was also shown that the integration of monitoring of behavior of gas emission and dissolved component must be necessary to identify the practical situation of landfills, and to apply for future investigation in terms of improving the accuracy and simplification of methodology.

Factors Prognostic for Survival in Japanese Patients Treated with Sunitinib as First-line Therapy for Metastatic Clear Cell Renal Cell Cancer

Kawai, Y,Osawa, T,Kobayashi, K,Inoue, R,Yamamoto, Y,Matsumoto, H,Nagao, K,Hara, T,Sakano, S,Nagamori, S,Matsuyama, H Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.14

Background: Factors predictive of survival have been identified in Western patients with metastatic clear cell renal cell carcinoma (mCCRCC) treated with sunitinib. Less is known, however, about factors predictive of survival in Japanese patients. This study evaluated factors prognostic of survival in Japanese patients with mCCRCC treated with first-line sunitinib. Materials and Methods: This retrospective study evaluated 46 consecutive Japanese mCCRCC patients treated with sunitinib as first line therapy. Clinical and biochemical markers associated with progression-free survival (PFS) were analyzed, with prognostic factors selected by uniand multivariate Cox regression analyses. Results: Univariate analysis showed that factors significantly associated with poor PFS included Memorial Sloan-Kettering Cancer Center poor risk scores, International Metastatic RCC Database Consortium poor risk and high (>0.5 mg/dl) serum C-reactive protein (CRP) concentrations (p<0.001 each). Multivariate analysis showed that high serum CRP was independently associated with poorer PFS (p=0.040). Six month disease control rate (complete response, partial response and stable disease) in response to sunitinib was significantly higher in patients with normal (${\leq}0.5mg/dl$) than elevated baseline CRP (p<0.001). Conclusions: CRP is a significant independent predictor of PFS for Japanese patients with mCCRCC treated with first-line sunitinib. Pretreatment CRP concentration may be a useful biomarker predicting response to sunitinib treatment.

일본의 매립 재생의 가능성(예비조사)

( Bulent Inane ),( Masato Yamada ),( Tomonori Ishigaki ),( Ohkochi Yumiko ),( Shino Mohri ),( Y. Inoue ),( Yusaku Ono ),( Masanao Nagamori ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2

이 논문은 일본의 매립지의 현상황을 기술하고 차후 매립지 재생 연구에 필요에 대해 토의한다. 일본은 고지 이용과 작은 매립능력만 남았고 획득한 새로운 매립구역은 지역거주자의 반대와 고가의 토지로 인하여 변화할 필요가 있다. 산업과 도시고형폐기물 매립지는 각각 3과 10년 정도의 매립능력 밖에 남지 않았다. 다른 한편으로 1998년 3월 보건복지부는 차수막, 침출수 처리시설이 없는 538개의 부적당한 매립구역 명단을 발표하고 즉시 시정할 것을 명하였다. 그러므로 일찍이 안정화와 재생은 마지막 처분문제 논쟁에 있어 현재 결정적으로 중요하다. In this paper, current situation of landfilling in Japan is presented, and future research need for landfill reclamation is discussed. Japan, with very high land utilization, has very little landfill capacity left, and acquiring a new landfill site is a challenging task due to objection from local residents and high land cost. Industrial and municipal waste landfills have left only less than three and ten years capacity, respectively. On the other hand, on march 1998, Ministry of Health and Welfare has published a list of 538 inappropriate municipal landfill sites with no liner, leachate treatment facility, or both, and requiring immediate corrective action. Therefore, early stabilization and reclamation are now crucially important for combating the final disposal problem.

폐기물 매립지의 표면에서 지상 온도와 가스 흐름의 관계

( Tomonori Ishigaki ),( Bulent Inane ),( Yumiko Ohkouchi ),( Shino Mohri ),( Masato Yamada ),( Yuzo Inoue ),( Takashi Kozakai ),( Masanao Nagamori ),( Yusaku Ono ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2

산업폐기물 매립지의 표면에서 배출되는 메탄을 조사하였다. 여름철에는 45군데에서 24군데가 겨울철에는 42군데에서 20군데가 메탄의 흐름을 보이지 않았다. 메탄의 유입은 몇 군데에서 발견되었고, 여름에 흐름 비율은 -0.29~370ml/m²/min 이고, 겨울에는 -0.50~109ml/m²/min의 범위이다. 지상의 온도와 메탄 흐름은 확실한 상호관계를 보인다. 전체 메탄 배출은 지상온도관계와 지상 온도의 분포를 기초로 하여 평가한다. 전체 매립지로부터 배출되는 메탄은 여름철과 겨울철에 각각 0.57m³/hr과 0.039m³/hr였다. Investigation on the methane emission from the surface of waste landfill that contains industrial waste was executed. . Twenty-four out of 45 points in summer and 20 out of 42 points in winter showed no methane flux. Influx of methane was observed in a few points, and flux rate ranged from -0.29 to 370 ml/m²/min in summer and from -0.50 to 109 ml/m²/min in winter. Ground temperature and methane flux showed certain correlation. Whole methane emission was estimated based on the correlation with ground temperature and the distribution of ground temperature. Estimated methane emissions from the whole landfill estimated were 0.57 m³/hr and 0.039 m³/hr in summer and winter, respectively.