Journal articles: 'Mole Concept'

1

Ramette, Richard W. "The mole concept is useful." Journal of Chemical Education 65, no. 4 (April 1988): 376. http://dx.doi.org/10.1021/ed065p376.3.

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Jensen, William B. "The Origin of the Mole Concept." Journal of Chemical Education 81, no. 10 (October 2004): 1409. http://dx.doi.org/10.1021/ed081p1409.

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Akben, Nimet. "Effect of concept cartoons used in teaching the mole concept." New Trends and Issues Proceedings on Humanities and Social Sciences 5, no. 6 (November 21, 2018): 157–60. http://dx.doi.org/10.18844/prosoc.v5i6.3853.

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Visual materials that can be used in classes such as PowerPoint presentations, analogies, documentaries and concept cartoons appeal to more than one sense of students and thus enable them to be more active in the learning process and learn more permanently by structuring knowledge in their minds more easily. In concept cartoons used to discover students’ conceptual structures and develop their comprehension, the intention is to create a discussion environment to reach knowledge by discussions without giving the answers directly. With this purpose, primary school candidates were given a variety of pictures and concept cartoons regarding the mole concept in the general chemistry class in order to explore the effect of these images on the concept learning as well as evaluating their view. This study’s result was parallel to the results of the studies that suggest that concept cartoons are effective on improving student success and developing a positive opinion. Keywords: Concept cartoons, chemistry education, mole concept.

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Bent, Henry A. "Should the mole concept be x-rated?" Journal of Chemical Education 62, no. 1 (January 1985): 59. http://dx.doi.org/10.1021/ed062p59.

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Moss, Karen, and Amish Pabari. "The mole misunderstood." New Directions in the Teaching of Physical Sciences, no. 6 (February 23, 2016): 77–86. http://dx.doi.org/10.29311/ndtps.v0i6.392.

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In every area of science there are some ideas that many students find difficult to grasp. A lack of understanding of key ideas can limit a student‟s ability to grasp and apply fundamental principles of their discipline. Previous work in this area, by Taber, has focused on this problem at school level. However, little work has been done to systematically investigate and analyse this phenomenon in undergraduate science programmes, beyond the anecdotal. A previous study involving students and staff from a range of scientific disciplines at our university identified that the mole (and its associated applications) was a difficult area for a wide range of students. The mole shows characteristics of being a „Threshold Concept‟ for students. Having identified the mole as a problem, the aim here was to explore why it is difficult and whether the conceptual issues can be systematically overcome, by using multiple perspectives. A sequence of questionnaires was used to survey over 100 people, involving school students aged 14-17, first-, second- and third-year university students, and secondary school teachers, in detail about the mole. We considered respondents‟ learning preferences and the type of activities in science lessons from which they felt they learned the most. Over 50% of respondents reported problems with the mole at some stage of their education. Further insights into how people conceptualise the mole were explored through the use of an educational research technique called „Hot Pen Writing‟. The outcomes of the research identified some of the reasons for student‟s lack of understanding of the mole concept including poor teaching in schools, difficulty in relating the concept to real-life situations and, not surprisingly, the fact that it involves maths. We consider what this suggests about how and when the mole should be taught within school education.

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Baah, Kennedy Ameyaw, Frank Owusu Ansah, Stephen Kwame Amoako, Solomon Boachie, and Christian Kwarteng. "Using Constructivist Approach to Enhance Understanding of Mole Concept among Second Year Students in Chemistry at Adobewura Senior High School in Ashanti Region, Ghana." International Journal of Scientific Research and Management 8, no. 08 (August 4, 2020): 1611–17. http://dx.doi.org/10.18535/ijsrm/v8i08.el03.

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The aim of the research was to use constructivist approach to enhance performance of second year elective science students of Adobewura in mole concept. In order to achieve this, the researcher employed the following research questions; What methods do teachers use to teach mole concept and to what extent can constructivist approach be used to help students understand mole concept. Action research was used since action research is a way of assessing result while operating. Purposive sampling was used to select 30 students for the study. Data were collected through tests (pre-intervention and post-intervention tests). The scores of the pre and post intervention tests were compared and result analyzed. The analyzed results indicated that students’ performance had improved remarkably after the implementation of all the intervention. For instance, when the researcher implemented the demonstration techniques, 23 students scored marks within 41-90 representing 76.67% while 23.33% scored between 41-30. No student scored marks less than 30 marks. Based on the findings of the study, it can be concluded that there are a lot of performance enhancements in using constructivist approach in teaching and learning mole concept at Adobewura SHS since it improves conceptual understanding and also there is a positive effect on students’ attitudes of mole concept. The researcher recommends that the use of constructivist approach in teaching and learning chemistry at the Senior High School should be encouraged by Curriculum developers and education implementers for students should have a hands-on experience with mole concept in learning chemistry. Keywords: Constructivist, Mole Concept, Demonstration, Purposive sampling, Intervention

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Krishnan, Shanthi R., and Ann C. Howe. "The Mole Concept: Developing an Instrument To Assess Conceptual Understanding." Journal of Chemical Education 71, no. 8 (August 1994): 653. http://dx.doi.org/10.1021/ed071p653.

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Huey Chong, Sheau, Norlia Goolamally, and Kwan Eu Leong. "Post-secondary Science Students' Understanding on Mole Concept and Solution Concentration." Universal Journal of Educational Research 7, no. 4 (April 2019): 986–1000. http://dx.doi.org/10.13189/ujer.2019.070410.

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Longo, Kevin J. "Using a Socratic Dialogue To Teach the Mole Concept to Adult Learners." Journal of Chemical Education 84, no. 8 (August 2007): 1285. http://dx.doi.org/10.1021/ed084p1285.

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LEE, Kam-Wah Lucille, Woh-Un TANG, Ngoh-Khang GOH, and Lian-Sai CHIA. "THE PREDICTING ROLE OF COGNITIVE VARIABLES IN PROBLEM SOLVING IN MOLE CONCEPT." Chem. Educ. Res. Pract. 2, no. 3 (2001): 285–301. http://dx.doi.org/10.1039/b1rp90029c.

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Shubbar, Khalil E. "Effectiveness of Using Computer - Assisted Supplementary Instruction for Teaching the Mole Concept." Journal of Educational and Psychological Sciences 04, no. 02 (June 2, 2003): 142–74. http://dx.doi.org/10.12785/jeps/040205.

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Yalçinalp, Serpil, Ömer Geban, and Ilker Özkan. "Effectiveness of Using Computer-Assisted Supplementary Instruction for Teaching the Mole Concept." Journal of Research in Science Teaching 32, no. 10 (December 1995): 1083–95. http://dx.doi.org/10.1002/tea.3660321007.

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Fang, Su-Chi, Christina Hart, and David Clarke. "Unpacking the Meaning of the Mole Concept for Secondary School Teachers and Students." Journal of Chemical Education 91, no. 3 (February 11, 2014): 351–56. http://dx.doi.org/10.1021/ed400128x.

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Mweshi, Emmanuel, Onesmus Munyati, and Kabunga Nachiyunde. "Teachers’ Understanding of the Link between the Atomic Theory and the Mole Concept." African Journal of Research in Mathematics, Science and Technology Education 24, no. 3 (September 1, 2020): 411–22. http://dx.doi.org/10.1080/18117295.2020.1845462.

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15

Staver, John R., and Andrew T. Lumpe. "A content analysis of the presentation of the mole concept in chemistry textbooks." Journal of Research in Science Teaching 30, no. 4 (April 1993): 321–37. http://dx.doi.org/10.1002/tea.3660300402.

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Ralph, Vanessa R., and Scott E. Lewis. "An explanative basis for the differential performance of students with low math aptitude in general chemistry." Chemistry Education Research and Practice 20, no. 3 (2019): 570–93. http://dx.doi.org/10.1039/c9rp00068b.

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Students who score within the bottom quartile on cognitive measures of math aptitude have been identified as at-risk for low performance in chemistry courses, with less attention as to why such differential performance persists. At-risk students struggle most differentially on assessment items related to the mole concept and stoichiometry. An exploration as to the nature of the differential performance observed became of great interest as the assessment of these topics rarely progresses beyond multiplication or division, and at-risk students who achieved proficiency with the mole concept and stoichiometry had no noticeable gaps in academic chemistry performance when compared to students scoring in the top three quartiles of math aptitude. Thus, students in first-semester general chemistry were surveyed to describe their solution processes toward assessment items involving the mole concept and stoichiometry. Three hundred and forty-eight students responded to all survey prompts with 101 identified as at-risk. Findings suggest that while all students were observed to struggle in the conceptualization of the algorithms by which they execute solution processes, not-at-risk chemistry students were more likely to achieve correct answers via chemically implausible solution pathways. Rather than suggest the removal of assessment practices involving algorithmic, multiple-choice assessment on these topics, the implications include practical suggestions and opportunities for further research toward improving the equitability of measures used to assess proficiency with stoichiometry.

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Taborada, Jeniffer C., and Joje Mar P. Sanchez. "Learning Mole Concept with PALS: An Intervention for Working Students in a Night School." KIMIKA 31, no. 1 (May 14, 2020): 11–19. http://dx.doi.org/10.26534/kimika.v31i1.11-19.

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A quasi-experimental study was done in order to investigate the effectiveness of Peer-Assisted Learning Strategy (PALS) as an intervention in learning Mole Concept for the ninth grade-working students in a night school in Cebu City, Philippines. Study findings revealed that students exposed to conventional lecture method (CLM) (N=15) had Below Average performance in the pre/posttests, and those exposed to PALS (N=15) had Below Average performance in the pretest and Average performance in the posttest. Both groups had significant mean improvement before and after exposure to CLM (t=5.07, p=.000) and PALS (t=10.37, p=.000), indicating that both lectures and peer tutoring are essential in teaching-learning process. The study also found out that those exposed to PALS (t=4.24, p=.000) had significantly greater improvement than those exposed to CLM. Moreover, sex, age, civil status and number of people in the house were not associated with their performance in Chemistry, implying that these profiles do not affect the tutor-tutee relationship. The study concluded that PALS manifested a more enhanced performance among the working students in Chemistry.

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18

Khang, Goh Ngoh, and Chia Lian Sai. "Secondary School Students' Difficulties in Learning the ‘Mole Concept’ — A Preliminary Study in Singapore." Singapore Journal of Education 8, no. 1 (January 1987): 80–88. http://dx.doi.org/10.1080/02188798708547617.

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Schiel, D., W. Richter, and G. Döge. "Notizen: Non-coincidence of Isotropic and Anisotropic Raman Spectra of the v3 Mode of the CH3F/CD3F System." Zeitschrift für Naturforschung A 45, no. 11-12 (December 1, 1990): 1381–82. http://dx.doi.org/10.1515/zna-1990-11-1228.

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AbstractIt has been proved with the aid of CH3F/CD3F mixtures that the remarkably large non-coincidence effect in the Raman scattering spectrum of the v3 mode of liquid methyl fluoride is due to intermolecular vibrational coupling mediated mainly by transition dipole interaction. The amount of the effect and its temperature and mole fraction dependence are - at least qualitatively - in agreement with Logan's theoretical concept. The rather different behaviour of the isotopic species and the asymmetry and narrow width of the isotropic band, however, raise new questions which require further investigations.

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20

Barański, Andrzej. "Comment on “Unpacking the Meaning of the Mole Concept for Secondary School Teachers and Students”." Journal of Chemical Education 91, no. 8 (July 17, 2014): 1098. http://dx.doi.org/10.1021/ed5002398.

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21

LABARRERE, CARLOS A., and OMAR H. ALTHABE. "Primary Chronic Abortion, Preeclampsia, Idiopathic Intrauterine Growth Retardation, Hydatidiform Mole, and Choriocarcinoma: A Unifying Concept." American Journal of Reproductive Immunology and Microbiology 10, no. 4 (April 1986): 156–57. http://dx.doi.org/10.1111/j.1600-0897.1986.tb00016.x.

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22

Staver, John R., and Andrew T. Lumpe. "Two investigations of students' understanding of the mole concept and its use in problem solving." Journal of Research in Science Teaching 32, no. 2 (February 1995): 177–93. http://dx.doi.org/10.1002/tea.3660320207.

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23

Тимонин, Анатолий. "SOCIAL STATE: TOWARDS THE HISTORY OF THE CONCEPT." Rule-of-law state: theory and practice 16, no. 1 (January 1, 2020): 28–37. http://dx.doi.org/10.33184/pravgos-2020.1.4.

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Favorable conditions for forming the theory of social state appeared only when the phenomena of the state and society began to differ both terminologically and conceptually. The concept of society was quite often used as a synonym of another concept - “state”, it was this concept that acted both as the name of the future goal and as an integral way of understanding the content and results of past processes related to charity and welfare. The idea of a social state is rooted in deep antiquity. It showed itself rather vividly in the activities of the Athenian reformer Solon and his relative Pisistrat, in the surprisingly active social policy of Byzantium. In the new historical conditions, German scientist Lorentz von Stein, guided by the Hegelian philosophy, especially actively and fruitfully developed this idea. Stein was captured by Hegel, his concepts and methodology and it initially allowed Stein to penetrate the essence of social and political phenomena, but as scientific thought developed, Hegel and Hegelians began to lose their former popularity with emerging social democracy in Germany. Stein’s controversy with Robert von Mole, co-author of the concept of the rule-of-law state, did not contribute to this. In the end, those authors who, like Adolf Wagner, did not oppose ideals of the social and rule-of-law states, but connected them, achieved the greatest success in the homeland of the spiritual father of the theory of social state.

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Sagita, Randa, Fajriah Azra, and Minda Azhar. "PENGEMBANGAN MODUL KONSEP MOL BERBASIS INKUIRI TERSTRUKTUR DENGAN PENEKANAN PADA INTERKONEKSI TIGA LEVEL REPRESENTASI KIMIA UNTUK KELAS X SMA." JURNAL EKSAKTA PENDIDIKAN (JEP) 1, no. 2 (December 8, 2017): 25. http://dx.doi.org/10.24036/jep.v1i2.48.

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The research has created the module of mole concept based on structured inquiry with interconnection of multiple representation and determined the validity and practicality of the module. The research type was Research and Development (R&D). The development model was 4-D models that consist of four steps: define, design, develop, and disseminate. The research was limited on develop step. The instrument of the research was questionnaire form that consist of validity and practicality sheets. The module was validated by 5 validators. Practicality module was tested by 2 chemistry teachers and 28 students of grade XI MIA 5 at SMAN 4 of Padang. Validity and practicality data were analysed by using the kappa Cohen formula. The moment kappa average of 5 validators was 0,95 with highest validity category. The moment kappa average of teachers and students were 0,89 and 0,91 praticality with high category. The result of the research showed that the module of mole concept based on structured inquiry with interconnection of macro, submicro, and symbolic representation was valid and practice to be used on the learning chemistry

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Manampiring, Gloria Viarosa, Ignatius Santoso, and Ardi Kapahang. "Penerapan Metode POGIL Pada Materi Konsep Mol Di Kelas X IPA SMA Negeri 2 Langowan." Oxygenius Journal Of Chemistry Education 1, no. 2 (December 31, 2019): 72. http://dx.doi.org/10.37033/ojce.v1i2.112.

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The purpose of this study was to determine the application of the POGIL method to the learning outcomes of Grade X Science students on the mole concept material.This research was implemented in class X IPA 1 and X IPA 2 SMA Negeri 2 Langowan school year 2018/2019. The method used is experimental method with post – test only control design research. In this study applied different methods on 2 classes namely POGIL class and lecture class with the number of students of each class of 23 students. Student learning Data is derived from the post-test value. Data analysis uses test-T with a significant level of α = 0.05. Analysis of student learning statistics test results obtained the value T > T table or 4.31 > 1.68. So that the H1 can be concluded accepted and H0 rejected, this shows that students ' learning outcomes with the application of the POGIL method are greater than the student learning outcomes by the lecture method on the concept of Mole material.

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Sasindua, Ravinia, Meytij Rampe, and Marlina Karundeng. "Pengaruh Model Pembelajaran Anchored Instruction terhadap Hasil Belajar Siswa." Oxygenius Journal Of Chemistry Education 2, no. 1 (June 30, 2020): 23. http://dx.doi.org/10.37033/ojce.v2i1.141.

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This research is an experimental study using the Anchored Instruction learning model. This study aims to determine the effect of the Anchored Instruction learning model on student learning outcomes on the mole concept subject. This research was conducted in class X SMA Negeri 2 Siau Timur with a sample of 40 people. The research design used was a pre-test and randomized two group design. The experimental class uses the Anchored Instruction learning model and the control class uses the conventional learning model. Analysis of the hypothesis test using t-test with a significant level α = 0.05. The test results obtained indicate that the results of tcount> ttable or 2.112> 2.024, thus H0 is rejected and H1 is accepted, this shows that there is a significant difference between the average value of the initial test (posttest) of the experimental group and the control group. So it can be concluded that there is a difference between student learning outcomes using the Anchored Instruction learning model and student learning outcomes using conventional learning models on mole concept subject.

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Annamalai, Kalyan, Siva Sankar Thanapal, and Devesh Ranjan. "Ranking Renewable and Fossil Fuels on Global Warming Potential Using Respiratory Quotient Concept." Journal of Combustion 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/1270708.

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Carbon dioxide (CO2) is one of the greenhouse gases which cause global warming. The amount of fossil fuels consumed to meet the demands in the areas of power and transportation is projected to increase in the upcoming years. Depending on carbon content, each power plant fuel has its own potential to produce carbon dioxide. Similarly, the humans consume food containing carbohydrates (CH), fat, and protein which emit CO2 due to metabolism. The biology literature uses respiratory quotient (RQ), defined as the ratio of CO2 moles exhausted per mole of O2 consumed within the body, to estimate CO2 loading in the blood stream and CO2 in nasal exhaust. Here, we apply that principle in the field of combustion to relate the RQ to CO2 emitted in tons per GJ of energy released when a fuel is combusted. The RQ value of a fuel can be determined either from fuel chemical formulae (from ultimate analyses for most liquid and solid fuels of known composition) or from exhaust gas analyses. RQ ranges from 0.5 for methane (CH4) to 1 for pure carbon. Based on the results obtained, the lesser the value of “RQ” of a fuel, the lower its global warming potential. This methodology can be further extended for an “online instantaneous measurement of CO2” in automobiles based on actual fuel use irrespective of fuel composition.

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Siswaningsih, W., H. Firman, Zackiyah, and A. Khoirunnisa. "Development ofTwo-TierDiagnostic Test Pictorial-Based for Identifying High School Students Misconceptions on the Mole Concept." Journal of Physics: Conference Series 812 (February 2017): 012117. http://dx.doi.org/10.1088/1742-6596/812/1/012117.

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Fang, Su-Chi, Christina Hart, and David Clarke. "Reply to “Comment on ‘Unpacking the Meaning of the Mole Concept for Secondary School Teachers and Students’”." Journal of Chemical Education 91, no. 8 (July 17, 2014): 1099–100. http://dx.doi.org/10.1021/ed500424s.

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Haszpra, L., Z. Barcza, T. Haszpra, Zs Pátkai, and K. J. Davis. "How well do tall-tower measurements characterize the CO<sub>2</sub> mole fraction distribution in the planetary boundary layer?" Atmospheric Measurement Techniques 8, no. 4 (April 7, 2015): 1657–71. http://dx.doi.org/10.5194/amt-8-1657-2015.

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Abstract. Planetary boundary layer (PBL) CO2 mole fraction data are needed by transport models and carbon budget models as both input and reference for validation. The height of in situ CO2 mole fraction measurements is usually different from that of the model levels where the data are needed; data from short towers, in particular, are difficult to utilize in atmospheric models that do not simulate the surface layer well. Tall-tower CO2 mole fraction measurements observed at heights ranging from 10 to 115 m above ground level at a rural site in Hungary and regular airborne vertical mole fraction profile measurements (136 vertical profiles) above the tower allowed us to estimate how well a tower of a given height could estimate the CO2 mole fraction above the tower in the PBL. The statistical evaluation of the height-dependent bias between the real PBL CO2 mole fraction profile (measured by the aircraft) and the measurement at a given elevation above the ground was performed separately for the summer and winter half years to take into account the different dynamics of the lower troposphere and the different surface CO2 flux in the different seasons. The paper presents (1) how accurately the vertical distribution of CO2 in the PBL can be estimated from the measurements on the top of a tower of height H; (2) how tall of a tower would be needed for the satisfaction of different requirements on the accuracy of the estimation of the CO2 vertical distribution; (3) how accurate of a CO2 vertical distribution estimation can be expected from the existing towers; and (4) how much improvement can be achieved in the accuracy of the estimation of CO2 vertical distribution by applying the virtual tall-tower concept.

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Haszpra, L., Z. Barcza, T. Haszpra, Z. Pátkai, and K. J. Davis. "How well do tall tower measurements characterize the CO<sub>2</sub> mole fraction distribution in the planetary boundary layer?" Atmospheric Measurement Techniques Discussions 7, no. 12 (December 9, 2014): 12249–82. http://dx.doi.org/10.5194/amtd-7-12249-2014.

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Abstract. Planetary boundary layer (PBL) CO2 mole fraction data are needed by transport models and carbon budget models as both input and reference for validation. The height of in situ CO2 mole fraction measurements is usually different from that of the model levels where the data are needed; data from short towers, in particular, are difficult to utilize in atmospheric models that do not simulate the surface layer well. Tall tower CO2 mole fraction measurements observed at heights ranging from 10 to 115 m a.g.l. at a rural site in Hungary and regular airborne vertical mole fraction profile measurements (136 vertical profiles) above the tower allowed us to estimate how well a tower of a given height could estimate the CO2 mole fraction above the tower in the PBL. The statistical evaluation of the height-dependent bias between the real PBL CO2 mole fraction profile (measured by the aircraft) and the measurement at a given elevation above the ground was performed separately for the summer and winter half years to take into account the different dynamics of the lower troposphere and the different surface CO2 flux in the different seasons. The paper presents: (1) how accurately the vertical distribution of CO2 in the PBL can be estimated from the measurements on the top of a tower of height H, (2) how tall a tower would be needed for the satisfaction of different requirements on the accuracy of the estimation of the CO2 vertical distribution, (3) how accurate a CO2 vertical distribution estimation can be expected from the existing towers; and (4) how much improvement can be achieved in the accuracy of the estimation of CO2 vertical distribution applying the virtual tall tower concept.

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Rundgren, Carl-Johan, Lena Tibell, Jesper Haglund, and Aina Tullberg. "Helge Strömdahl (1945-2018)." Nordic Studies in Science Education 15, no. 3 (October 30, 2019): 328–32. http://dx.doi.org/10.5617/nordina.7066.

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This article is written in memory of Professor Helge Strömdahl (1945-2018), the former director of the Swedish National Graduate School in Science and Technology Education (FontD). Helge took his Ph.D. at Gothenburg University in 1996 with the dissertation “On mole and amount of substance. A study of the dynamics of concept formation and concept attainment”. He was director of the Swedish National Graduate School in Science and Technology Education (FontD) from 2001 until his retirement in 2010, and became professor in science education at Linköping University. As director of the national graduate school, Helge encouraged and cultivated a methodologically and theoretically broad view on research in science education.

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Ralph, Vanessa R., and Scott E. Lewis. "Chemistry topics posing incommensurate difficulty to students with low math aptitude scores." Chemistry Education Research and Practice 19, no. 3 (2018): 867–84. http://dx.doi.org/10.1039/c8rp00115d.

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The identification of students at risk for academic failure in undergraduate chemistry courses has been heavily addressed in the literature. Arguably one of the strongest and most well-supported predictors of undergraduate success in chemistry is the mathematics portion of the SAT (SAT-M), a college-entrance, standardized test administered by the College Board. While students scoring in the bottom quartile of the SAT-M (herein referred to as at-risk) perform significantly worse on first-semester chemistry assessments, little is known of the topics on which these students differentially struggle. The purpose of this study is to provide insight as to which first-semester chemistry topics present an incommensurate challenge to at-risk students. Students were identified as either at-risk or not at-riskviaSAT-M scores. Students’ assessment responses were collected across four semesters of first-semester chemistry courses at a large, public university (N= 5636). At-risk students struggled consistently across all topics but disproportionately with mole concept and stoichiometry. Analyzing the trend in topics suggests that the struggles of at-risk students are not entirely attributable to topics that rely heavily on algorithms or algebraic math. Moreso, at-risk students found to have performed well on mole concept and stoichiometry went on to perform similarly as their not at-risk peers. The results support an instructional emphasis on these topics with reviewed literature offering promising, practical options to better serve at-risk students and broaden representation in the sciences.

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Matosek, Mirosław. "CULTURAL FRAMEWORK OF ORGANIZATIONAL BEHAVIOR OF GERMANS AND POLES." International Journal of New Economics and Social Sciences 3, no. 1 (June 30, 2016): 0. http://dx.doi.org/10.5604/01.3001.0010.3882.

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The article describes the cultural framework of organizational behavior of Germans and Poles. Presented attitudes and behavior patterns according to the concept of Lewis, Hofstede, Trompenaars and Hampden - Turner, Gesteland, Mole and Tomalin and Nicks. Cultural knowledge of partners and the respect of fundamental principles in the civilized world of business is the foundation of building relationships and good business for both sides. The following are barriers to intercultural communication and ways of overcoming them. The author defends that the big cultural differences need not be an obstacle to doing business.

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Dewu, Selase, and Eivin Røskaft. "Community attitudes towards protected areas: insights from Ghana." Oryx 52, no. 3 (February 6, 2017): 489–96. http://dx.doi.org/10.1017/s0030605316001101.

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AbstractUnderstanding community attitudes towards protected areas is of great importance because these attitudes are inherently linked to the long-term existence and effectiveness of protected areas. We assessed the factors that influence community attitudes towards Mole and Digya National Parks in Ghana. During June–August 2015 we conducted interviews with 346 randomly selected households, using a semi-structured questionnaire. We found that attitudes towards the protected areas were positive, with Mole residents being more positive than Digya residents. Analyses revealed that community attitudes were largely influenced by the perceived costs and benefits of the protected area, household size, occupation, level of education, and awareness of or participation in livelihood projects. The findings suggest that increasing the benefits from protected areas and minimizing the costs on fringe communities fosters positive attitudes towards the concept of protected areas and conservation in general. Additionally, perceptions of protected areas are likely to be more positive when management interventions are tailored for local communities as opposed to the adoption of universal, unspecific interventions.

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Yona, Putri, and Ellizar Ellizar. "Pengembangan Modul Konsep Mol Berbasis Pendekatan Saintifik dengan Pertanyaan Probing dan Prompting untuk Kelas X SMA/MA." Entalpi Pendidikan Kimia 2, no. 2 (April 30, 2021): 8–16. http://dx.doi.org/10.24036/epk.v0i0.138.

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Chemistry modules based on a scientific approach based on probing-prompting questions are designed in such a way as to increase student motivation so as to create an active learning atmosphere, in this way it can make it easier for students to understand the concepts that must be mastered in the mole concept material. The purpose of this research is to produce a product in the form of a module based on a scientific approach applying the probing-prompting technique to the mole concept material and to reveal the level of validity and practicality of the modules created. These types of research are research and development (RD) using the plomp model and include three stages, namely the initial research stage, the concept formation stage, the assessment stage. In this study, the module validity test was conducted by five validators, namely two chemistry lecturers and three chemistry teachers. The practicality test was carried out by three chemistry teachers and 18 chemistry students at SMA Negeri 2 Batusangkar. The data analysis technique on the validity uses the Aiken's V scale of 0.83 and the data analysis technique in practicality using descriptive statistics is obtained a value of 0.88.The resulting module is based on the iliah method which is equipped with probing prompting questions.The resulting module is based on scientific methods equipped with probing-prompting questions, so that it can be concluded that it is practical and valid. Modul kimia berbasis pendekatan saintifik berdasarkan pertanyaan probing-prompting dirancang sedemikian rupa sehingga meningkatkan motivasi siswa sehingga terciptanya suasana belajar yang aktif, dengan cara ini dapat memudahkan siswa dalam memahami konsep konsep yang harus dikuasai dalam materi konsep mol. Tujuan dari penelitian ini adalah untuk menghasilkan produk dalam bentuk modul berbasis pendekatan saintifik menerapkan teknik probing-prompting pada materi konsep mol dan mengungkap tingkat validitas dan kepraktikalitas modul yang dibuat. Jenis-jenis penelitian ini adalah penelitian dan pengembangan (RD) dengan menggunakan model plomp dan meliputi tiga tahap yaitu tahap penelitian awal, tahap pembentukan konsep, tahap penilaian. Dalam penelitian ini, uji validitas modul dilakukan oleh lima orang validator, yaitu dua orang dosen kimia dan tiga orang guru kimia. Uji kepraktisan dilakukan oleh tiga orang guru kimia dan 18 orang siswa kimia SMA Negeri 2 Batusangkar. Teknik analisa data pada validitas menggunakan skala Aiken’s V sebesar 0,83 dan teknik analisa data pada praktikalitas menggunakan statistic descriptive diperoleh nilai sebesar 0,88 Modul yang dihasilkan didasarkan pada metode ilmiah yang dilengkapi dengan pertanyaan probing-prompting modul yang dihasilkan didasarkan pada metode ilmiah yang dilengkapi dengan pertanyaan probing-prompting, sehingga dapat disimpulkan praktis dan valid.

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Buchholz, Bernhard, and Volker Ebert. "Absolute, pressure-dependent validation of a calibration-free, airborne laser hygrometer transfer standard (SEALDH-II) from 5 to 1200 ppmv using a metrological humidity generator." Atmospheric Measurement Techniques 11, no. 1 (January 23, 2018): 459–71. http://dx.doi.org/10.5194/amt-11-459-2018.

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Abstract. Highly accurate water vapor measurements are indispensable for understanding a variety of scientific questions as well as industrial processes. While in metrology water vapor concentrations can be defined, generated, and measured with relative uncertainties in the single percentage range, field-deployable airborne instruments deviate even under quasistatic laboratory conditions up to 10–20 %. The novel SEALDH-II hygrometer, a calibration-free, tuneable diode laser spectrometer, bridges this gap by implementing a new holistic concept to achieve higher accuracy levels in the field. We present in this paper the absolute validation of SEALDH-II at a traceable humidity generator during 23 days of permanent operation at 15 different H2O mole fraction levels between 5 and 1200 ppmv. At each mole fraction level, we studied the pressure dependence at six different gas pressures between 65 and 950 hPa. Further, we describe the setup for this metrological validation, the challenges to overcome when assessing water vapor measurements on a high accuracy level, and the comparison results. With this validation, SEALDH-II is the first airborne, metrologically validated humidity transfer standard which links several scientific airborne and laboratory measurement campaigns to the international metrological water vapor scale.

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Ferhati, Hichem, Fayçal Djeffal, and Toufik Bentrcia. "The role of the Ge mole fraction in improving the performance of a nanoscale junctionless tunneling FET: concept and scaling capability." Beilstein Journal of Nanotechnology 9 (June 22, 2018): 1856–62. http://dx.doi.org/10.3762/bjnano.9.177.

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In this paper, a new nanoscale double-gate junctionless tunneling field-effect transistor (DG-JL TFET) based on a Si1− x Ge x /Si/Ge heterojunction (HJ) structure is proposed to achieve an improved electrical performance. The effect of introducing the Si1− x Ge x material at the source side on improving the subthreshold behavior of the DG-JL TFET and on suppressing ambipolar conduction is investigated. Moreover, the impact of the Ge mole fraction in the proposed Si1− x Ge x source region on the electrical figures of merit (FoMs) of the transistor, including the swing factor and the I ON/I OFF ratio is analyzed. It is found that the optimized design with 60 atom % of Ge offers improved switching behavior and enhanced derived current capability at the nanoscale level, with a swing factor of 42 mV/dec and an I ON/I OFF ratio of 115 dB. Further, the scaling capability of the proposed Si1− x Ge x /Si/Ge DG-HJ-JL TFET structure is investigated and compared to that of a conventional Ge-DG-JL TFET design, where the optimized design exhibits an improved switching behavior at the nanoscale level. These results make the optimized device suitable for designing digital circuit for high-performance nanoelectronic applications.

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Cysewski, Piotr. "Application of the Consonance Solvent Concept for Accurate Prediction of Buckminster Solubility in 180 Net Solvents using COSMO-RS Approach." Symmetry 11, no. 6 (June 22, 2019): 828. http://dx.doi.org/10.3390/sym11060828.

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The default COSMO-RS (Conductor like Screening Model for Real Solvents) approach is incapable of accurate computation of C60 solubility in net solvents. Additionally, there is no adequate selection of single or multiple reference solvent, which can be applied to the whole population of 180 solvents for improving prediction of mole fraction at saturated conditions. This failure cannot be addressed to inaccurate data of the Buckminster fusion, although they pose a challenge for experimental measurement due to intense sublimation of C60 at elevated temperatures and the possibility of solvates precipitation. However, taking advantage of the richness of experimental data of fullerene solubility, it is possible to identify the source of errors expressed in terms of fluidization affinity. Classification of solvents according to the value of this fluidization term allowed for formulation of a consonance solvents approach, which enables accurate prediction of C60 solubility using the single reference solvent method.

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Adabbo, H. E., G. González-Doncel, O. A. Ruano, J. M. Belzunce, and O. D. Sherby. "Strain hardening during superplastic deformation of A1-7475 alloy." Journal of Materials Research 4, no. 3 (June 1989): 587–94. http://dx.doi.org/10.1557/jmr.1989.0587.

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Strain hardening dominates the deformation process in fine-grained A1-7475 alloy in the temperature range 400 to 515 °C. It is shown that anomalously low stress exponents are obtained as a result of strain hardening in strain-rate-change tests. In order to measure stress exponents in a quasi-steady state condition, the samples must be initially deformed at a relatively high stress (≍ 10 MPa) to a relatively high strain (∊ ≍ 0.5) before initiating a strain-rate-change test. Such a procedure revealed that a stress exponent about equal to two and an activation energy (141 kJ/mole) nearly equal to the activation energy for lattice diffusion are obtained. The results are interpreted in terms of a model involving grain boundary sliding accommodated by slip following the Gifkins' “core and mantle” concept. It is proposed that strain hardening is associated with the development of a boundary-dislocation structure in the mantle region in a manner similar to the development of subgrains in the core of a grain when slip is the principal deformation mode.

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Xia, Jiabing, Gerhart Eigenberger, Heinrich Strathmann, and Ulrich Nieken. "Acid-Base Flow Battery, Based on Reverse Electrodialysis with Bi-Polar Membranes: Stack Experiments." Processes 8, no. 1 (January 11, 2020): 99. http://dx.doi.org/10.3390/pr8010099.

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Neutralization of acid and base to produce electricity in the process of reverse electrodialysis with bipolar membranes (REDBP) presents an interesting but until now fairly overlooked flow battery concept. Previously, we presented single-cell experiments, which explain the principle and discuss the potential of this process. In this contribution, we discuss experiments with REDBP stacks at lab scale, consisting of 5 to 20 repeating cell units. They demonstrate that the single-cell results can be extrapolated to respective stacks, although additional losses have to be considered. As in other flow battery stacks, losses by shunt currents through the parallel electrolyte feed/exit lines increases with the number of connected cell units, whereas the relative importance of electrode losses decreases with increasing cell number. Experimental results are presented with 1 mole L−1 acid (HCl) and base (NaOH) for open circuit as well as for charge and discharge with up to 18 mA/cm2 current density. Measures to further increase the efficiency of this novel flow battery concept are discussed.

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Sagita, R., F. Azra, and M. Azhar. "Development of Mole Concept Module Based on Structured Inquiry with Interconection of Macro, Submicro, and Symbolic Representation for Grade X of Senior High School." IOP Conference Series: Materials Science and Engineering 335 (April 2018): 012104. http://dx.doi.org/10.1088/1757-899x/335/1/012104.

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Kunz, Martin, Jost V. Lavric, Rainer Gasche, Christoph Gerbig, Richard H. Grant, Frank-Thomas Koch, Marcus Schumacher, Benjamin Wolf, and Matthias Zeeman. "Surface flux estimates derived from UAS-based mole fraction measurements by means of a nocturnal boundary layer budget approach." Atmospheric Measurement Techniques 13, no. 4 (April 6, 2020): 1671–92. http://dx.doi.org/10.5194/amt-13-1671-2020.

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Abstract. The carbon exchange between ecosystems and the atmosphere has a large influence on the Earth system and specifically on the climate. This exchange is therefore being studied intensively, often using the eddy covariance (EC) technique. EC measurements provide reliable results under turbulent atmospheric conditions, but under calm and stable conditions – as they often occur at night – these measurements are known to misrepresent exchange fluxes. Nocturnal boundary layer (NBL) budgets can provide independent flux estimates under stable conditions, but their application so far has been limited by rather high cost and practical difficulties. Unmanned aircraft systems (UASs) equipped with trace gas analysers have the potential to make this method more accessible. We present the methodology and results of a proof-of-concept study carried out during the ScaleX 2016 campaign. Successive vertical profiles of carbon dioxide dry-air mole fraction in the NBL were taken with a compact analyser carried by a UAS. We estimate an average carbon dioxide flux of 12 µmolm-2s-1, which is plausible for nocturnal respiration in this region in summer. Transport modelling suggests that the NBL budgets represent an area on the order of 100 km2.

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Prabowo, D. W., S. Mulyani, K.-H. van Pée, and N. Y. Indriyanti. "Comprehensive understanding of mole concept subject matter according to the tetrahedral chemistry education (empirical study on the first-year chemistry students of Technische Universität Dresden)." Journal of Physics: Conference Series 1022 (May 2018): 012034. http://dx.doi.org/10.1088/1742-6596/1022/1/012034.

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Choi, Hyung-Min. "Nonformaldehyde Polymerization-Crosslinking Treatment of Cotton Fabrics for Improved Strength Retention." Textile Research Journal 62, no. 10 (October 1992): 614–18. http://dx.doi.org/10.1177/004051759206201010.

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A new concept in polycarboxylic crosslinking agents for cellulose is introduced using olefinically unsaturated dicarboxylic acids, maleic acid (MA), and itaconic acid (IA). In contrast to previous studies involving acids containing at least three carboxylic groups per molecule, we found that the dicarboxylic monomers can be effective cross-linking agents for cellulose when they are applied in the presence of a free radical initiator and an esterification catalyst. The results demonstrate that the system of a 1:1 mole ratio of MA and IA substantially increases a smooth drying appearance while maintaining much improved strength retention of the treated fabric and without involving any formaldehyde. Striking effects appear in the increased Stoll flex abrasion resistance of the treated fabric. The evidence of cellulose crosslinks through esterification reactions of carboxyl groups in MA and IA and cellulose hydroxyl groups is confirmed by chemical analyses and FT-IR spectra.

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Panganiban, Rhoda E. "Problem Solving Skills of Grade 9 Students in Science and their Science Academic Performance (A Proposed Differentiated Materials)." Instabright International Journal of Multidisciplinary Research 2, no. 1 (June 15, 2020): 63–69. http://dx.doi.org/10.52877/instabright.002.01.0010.

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The study determined the problem-solving skills and the academic performance in science of grade 9 students as basis for the preparation of differentiated materials on the science subject. Focusing on specific topics like electronic structure of matter, chemical bonding, carbon compound and mole concept, it involved the participation of 52 grade 9 students. The findings showed that the level of problem-solving skills of the Grade 9 students was generally described as above average, their academic performance in Science was found to be at the same above average level. The data led to the rejection of the hypothesis explaining a moderate relationship between the level of problem-solving skills and the academic performance of the students in the subject. A number of instructional materials were developed to address the weakness of the students in problem solving. Further studies on the problem-solving skills of the students are strongly recommended.

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Filarsky, Florian, Julian Wieser, and Heyko Juergen Schultz. "Rapid Gas Hydrate Formation—Evaluation of Three Reactor Concepts and Feasibility Study." Molecules 26, no. 12 (June 12, 2021): 3615. http://dx.doi.org/10.3390/molecules26123615.

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Gas hydrates show great potential with regard to various technical applications, such as gas conditioning, separation and storage. Hence, there has been an increased interest in applied gas hydrate research worldwide in recent years. This paper describes the development of an energetically promising, highly attractive rapid gas hydrate production process that enables the instantaneous conditioning and storage of gases in the form of solid hydrates, as an alternative to costly established processes, such as, for example, cryogenic demethanization. In the first step of the investigations, three different reactor concepts for rapid hydrate formation were evaluated. It could be shown that coupled spraying with stirring provided the fastest hydrate formation and highest gas uptakes in the hydrate phase. In the second step, extensive experimental series were executed, using various different gas compositions on the example of synthetic natural gas mixtures containing methane, ethane and propane. Methane is eliminated from the gas phase and stored in gas hydrates. The experiments were conducted under moderate conditions (8 bar(g), 9–14 °C), using tetrahydrofuran as a thermodynamic promoter in a stoichiometric concentration of 5.56 mole%. High storage capacities, formation rates and separation efficiencies were achieved at moderate operation conditions supported by rough economic considerations, successfully showing the feasibility of this innovative concept. An adapted McCabe-Thiele diagram was created to approximately determine the necessary theoretical separation stage numbers for high purity gas separation requirements.

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Holgate, John. "Informational Aesthetics—What Is the Relationship between Art Intelligence and Information?" Proceedings 47, no. 1 (May 15, 2020): 54. http://dx.doi.org/10.3390/proceedings47010054.

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The author examines the notion of informational aesthetics. The origin of aesthetics lies in Epicurus’s notion of aesthesis and the integration of artistic activity within ethics and the ‘good life’—as in the aesthetic theory and practice of the East. The debasement of the word ‘aesthetic’ reflects the increasing alienation of beauty from imagination. The fragmentation of art now packaged as media objects in our digital world is the legacy of this alienation. The author retraces the history of the concept of information aesthetics developed in the 1960s by Birkhoff, Bense and Mole and which sought to marry mathematics, computation and semiotics with artistic activity, based on Birkhoff’s aesthetic measure, and to bridge the gap between science and the humanistic imagination. The failure of the cognitive school is attributed to the limitations of its data-driven view of art itself as an affordance of perception (Arnheim). The roles of algorithmically generated art and of Computational Aesthetic Evaluation (CAE) are assessed. An appeal is made to the more fertile conceptual ground of information civilization—an idea developed by Professor Kun Wu. The author introduces the concept of digital iconography and applies it to Renaissance masterpieces such as Raphael’s School of Athens and Leonardo’s Mona Lisa. In conclusion, Informational Aesthetics is identified as a future discipline for the Philosophy of Information.

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Holgate, John. "Informational Aesthetics—What Is the Relationship between Art Intelligence and Information?" Proceedings 47, no. 1 (May 15, 2020): 54. http://dx.doi.org/10.3390/proceedings2020047054.

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The author examines the notion of informational aesthetics. The origin of aesthetics lies in Epicurus’s notion of aesthesis and the integration of artistic activity within ethics and the ‘good life’—as in the aesthetic theory and practice of the East. The debasement of the word ‘aesthetic’ reflects the increasing alienation of beauty from imagination. The fragmentation of art now packaged as media objects in our digital world is the legacy of this alienation. The author retraces the history of the concept of information aesthetics developed in the 1960s by Birkhoff, Bense and Mole and which sought to marry mathematics, computation and semiotics with artistic activity, based on Birkhoff’s aesthetic measure, and to bridge the gap between science and the humanistic imagination. The failure of the cognitive school is attributed to the limitations of its data-driven view of art itself as an affordance of perception (Arnheim). The roles of algorithmically generated art and of Computational Aesthetic Evaluation (CAE) are assessed. An appeal is made to the more fertile conceptual ground of information civilization—an idea developed by Professor Kun Wu. The author introduces the concept of digital iconography and applies it to Renaissance masterpieces such as Raphael’s School of Athens and Leonardo’s Mona Lisa. In conclusion, Informational Aesthetics is identified as a future discipline for the Philosophy of Information.

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Bhimavarapu, Venkata Mrudula, and Dr Shailesh Rastogi. "Dividend and Bank Performance in India: Evidence using Panel Data Analysis." International Journal of Management and Humanities 6, no. 1 (September 30, 2021): 1–4. http://dx.doi.org/10.35940/ijmh.l1370.096121.

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Dividend has been a matter of concern since the concept of limited liability of the firms came to existence. The uncertainty regarding dividend policy is supposed to hunker down unless we move away from whack-a-mole approach to a long-winded solution to the problem of dividend policy. The issue gets exacerbated because of inclination towards the valuation by the people who call the shots in the firms. This paper explores the association of dividend with the rising NPAs in the Indian banks. The findings of the paper are the testimony to the fact that dividend policy in the banks has issues and need to be checked and corrected. It is recommended in the paper to decouple dividends from the NPA by linking dividend policy with free cash flow. It is also recommended to adopt DVR shares to cater to the aspirations of those investors who do look for consistent dividend policy irrespective of the performance of the banks in a particular year.

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Journal articles on the topic 'Mole Concept'

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