A Crisis of Identity: Late Classic Competition and Interaction on the Southeast Maya Periphery

1991 ◽  
Vol 2 (4) ◽  
pp. 311-336 ◽  
Author(s):  
Edward Schortman ◽  
Seiichi Nakamura

Archaeologists frequently assume that when cultures interact with each other the most complex partner dominates the transactions. We propose that this is a misleadingly simple view of a complex process. A framework for modeling intersocietal interaction and understanding its sociopolitical consequences is outlined here. This theoretical structure calls attention to who is actually involved in the interaction process, how these transactions are carried out, and what the goals of the contact partners are. The complex material patterns from two neighboring areas of Late Classic (A. D. 600-950) southeast Mesoamerica are then examined using the proposed model to see what insights into ancient interaction processes it can provide.

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Michael Murimi ◽  
Billy Wadongo ◽  
Tom Olielo

AbstractThis conceptual paper aims at identifying a theoretical framework for the determinants of revenue management (RM) practices and their impacts on the financial performance of hotels. To create this framework, a two-phased process is employed where the first stage involves an explicit examination of the literature related to practices of revenue management and their determinants and to hotel financial performance. The second stage involves an enhancement of the framework. The theoretical structure is developed based on past theoretical explanations, and empirical analysis is conducted in the fields of revenue management. The researchers propose a theoretical framework illustrating how revenue management practices and their determinants affect the financial performance of Kenyan hotels. The use of contingency theory and its justifications and inadequacies among studies on revenue management in hotels is highlighted. The methods highlighted by the reviewed theoretical framework may be utilized to organize revenue management (RM) practices and their determinants for Kenyan hotels. Measurements for the financial performance of hotels are also described. Last, the researchers call for empirical research that authenticates the proposed model using a cross-sectional survey. The present work can inspire scholars and specialists to determine how RM practices and their determinants impact the financial performance of hotels. By assimilating knowledge from numerous disciplines, this paper emphasizes aggregated awareness surrounding the conceptualization of RM, RM practices adopted in hotels, and the financial performance of hotels.


2016 ◽  
Vol 3 (3) ◽  
pp. 291-317 ◽  
Author(s):  
Camilo Vieira ◽  
Molly Hathaway Goldstein ◽  
Şenay Purzer ◽  
Alejandra J. Magana

Engineering design is a complex process. The design process cannot be assessed based solely on a product or as a simple test because there is no single perfect design for a problem. An important design strategy is the conduction of experiments. Informed designers carry out experiments and use their outcomes to inform their next steps. On the other hand, beginning designers do little or no experiments, and the few experiments they do involve confounding variables. These behaviours that differentiate beginning and informed designers are not easy to assess in educational settings because they occur throughout the design process. This paper proposes and evaluates a model to analyze student interactions with a CAD tool in order to identify and characterize the different strategies students use to conduct experiments. A two-fold study is carried out to validate the model. The first phase uses the clickstream data of 51 middle school students working on a design project to create a net-zero energy house. The analysis of clickstream data is compared to a qualitative analysis of an open-ended posttest. The second phase correlates the number of experiments students did to the student prototype quality. The results suggest that the proposed model can be used to identify, characterize, and assess student strategies to conduct experiments.


Author(s):  
Yafu Lin ◽  
Kevin Foy ◽  
Yong Huang ◽  
Douglas B. Chrisey

Matrix-assisted pulsed-laser evaporation direct write (MAPLE DW) is emerging as a promising direct-write technology for printing microelectronics as well as biological constructs. To widely employ this technology, understanding of its physical mechanism is of need. In this study, the bubble formation process in MAPLE DW of glycerol-water coating is modeled based on the nucleation-based phase explosion theory. Based on the proposed model, the bubble diameter after expansion and cooling and bubble pressure can be predicted. Although the prediction overall overestimates the bubble diameter during the MAPLE DW experiments, the proposed model is considered satisfactory in reasonably predicting the bubble diameter as a first step endeavor for this complex process. It is expected that the introduction of more accurate models for energy loss should further help improve the model prediction accuracy.


Author(s):  
Jennifer H. Webster

Purpose – The purpose of this paper is to propose an original model of stress and coping as a complex interactive process between an individual and his or her environment. Design/methodology/approach – A preliminary test of the model is conducted using data from a meta-analysis of perceived occupational stress among police officers. Collapsing correlates into predictor domains that mirror the proposed model of stress and coping allowed for a preliminary analysis of some of the constructs in the proposed model. Findings – The findings suggest that each domain contributes to the perception of stress and that knowledge in this area might best be advanced by recognizing the importance of each in shaping an interactive process of stress and coping rather than attempting to rank individual correlates. Research limitations/implications – The data do not provide definitive conclusions that personal characteristics or job characteristics, for example, are more important than others in shaping stress perception among police officers. Clearly, these findings suggest that questions about what is most important in shaping police stress have remained unanswered because the variables of interest make equally important contributions to a complex process. Originality/value – Adopting the proposed integrative model of stress and coping may help researchers move beyond the flawed conceptualization of perceived stress among police officers as a simple operational/organizational dichotomy, allowing for a more rich understanding of stress and coping as a complex process.


1989 ◽  
Vol 54 (1) ◽  
pp. 52-65 ◽  
Author(s):  
Edward M. Schortman

Recent archaeological efforts to model processes of intersocietal interaction have been hampered by a dearth of conceptual tools suitable to these analyses. In particular, there is a need for a theoretical structure that shifts concern from our traditional focus on spatially distinct cultures and their relations to the physical environment. Without such a shift, questions of intersocietal contact cannot be addressed successfully. This article suggests that the concept of social identity has a role to play in this reorientation. The use of social identity focuses attention directly on intersocietal interactions by encouraging us to ask such questions as who is interacting with whom, under what conditions, and what are the effects of the contact on local social change? This paper defines social identity, provides examples suggesting its utility in archaeological research, and considers the specific questions raised by the application of social identity to archaeological materials.


1967 ◽  
Vol 20 (2) ◽  
pp. 555-562 ◽  
Author(s):  
Leonard Kingsley

4 group therapists met for 4 sessions after the departure of the leader of their countertransference seminar. The group disbanded after the fourth meeting. This last meeting was recorded and analyzed using Bales' system of Interaction Process Analysis. Some factors leading to the group's dissolution were the absence of a leader, unresolved tension and antagonism, and the presence of the tape recorder. The lines of communication among members were quite uneven in that 2 members spoke mostly to one another, while 1 of them and 1 other member interacted not at all. Of the formal scoring categories, Bales' Index of Expressive-Malintegrative Behavior was of most significance in understanding the group interaction processes.


ChemInform ◽  
2010 ◽  
Vol 30 (38) ◽  
pp. no-no
Author(s):  
Yashar Yourdshahyan ◽  
Carlo Ruberto ◽  
Mats Halvarsson ◽  
Lennart Bengtsson ◽  
Vratislav Langer ◽  
...  

Author(s):  
S. J. Gogoi ◽  
P. N. Deka

Unique forms of nonlinear wave energy exchange phenomena are observed in the Earth’sionosphere region. Energy upconversion of nonresonant plasma waves in the top ionospheric and auroral zone are noticed.Origin of these phenomena are tried to explained by linear andnonlinear theoretical approach.Wave-wave and wave-particle-wave interaction processes may be possible role takes place here.In this theoretical investigation we wish to derive probable growthrate expression of high frequency electromagnetic O-mode wave in the presence of low frequency electrostatic ion sound wave through wave-particle interaction process known as plasma maserinstability and estimate its value by using observational data.


Robotic Arms are generally a programmable type of mechanical arm with functions similar to human arm which is either the sum of total mechanism or may be a complex robot part. These robotic arms are employed in assembly line of industries performing complex process like drilling, painting and painting etc. It is possible to fabricate gesture controlled Industrial robot arms. The robot is easily accessible and requires lesser controlling effects. In this work a glove attached to human hand is incorporated with flex sensors and transceiver. The flex sensor resistance can be varied by hand movement which is transferred to the axis of robot. The resistance of glove can make robot rotate either angular or in a linear motion about its axis. A transceiver circuit is employed for signal control which is capable of transmitting and receiving signal between human hand and robotic arm.The flex sensor senses and gives corresponding signals. The analog signal from the flex sensor given to Arduino, it will work according to the Arduino program. The signal is transmitted from Arduino to Zigbee for wireless communication. The driver circuit put together with transistor to control the relay. The relay output is connected directly to motor joined with the robot. With this arrangement arm can be used for pick and place application. The robotic arm delivers the programmed movement and the proposed model have widespread application for people working in hazardous areas.


2004 ◽  
Vol 82 (6) ◽  
pp. 1365-1380 ◽  
Author(s):  
Yashar Yourdshahyan ◽  
Carlo Ruberto ◽  
Mats Halvarsson ◽  
Lennart Bengtsson ◽  
Vratislav Langer ◽  
...  

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